The Ultimate Guide on How To Use Sewing Patterns

How do you use sewing patterns? Using a sewing pattern is a simple process once you know the basic steps. You start by choosing the right pattern and fabric for your project. Then you prepare the pattern pieces, place them on your fabric following a guide, cut out the fabric shapes, and sew them together using the step-by-step instructions that come with the pattern. This guide will walk you through each part of this fun creative journey.

Getting Started with a Sewing Pattern

Sewing patterns are like blueprints for making clothes or other sewing projects. They give you the shapes of each piece you need to cut from fabric. They also tell you how to put those pieces together. Learning how to use them opens up a world of making things yourself.

To begin, you need a pattern and fabric. The pattern envelope gives you lots of information to help you choose.

Pattern Envelope Information

The pattern envelope is packed with helpful details. Think of it as the project summary. Looking closely at the pattern envelope information helps you decide if the pattern is right for you and your project idea.

Here is what you usually find on the front and back of a sewing pattern envelope:

Picture of the finished project: This shows you what the item looks like. It helps you see the style and fit.
Pattern number: Each pattern has a unique number.
Sizes included: The envelope lists the sizes available in that one pattern packet.
Suggested fabrics: The pattern designer tells you which types of fabric work best for this design. Using a different fabric might change how the finished item looks or fits.
Notions list: This lists extra items you need. Things like zippers, buttons, elastic, thread, and trim are often here.
Yardage chart: This table tells you how much fabric you need. It depends on the size you are making and the width of your fabric. It also often shows different amounts needed based on fabric pattern direction (like if it has a nap or a one-way design).
Description: A short write-up about the project. It might mention skill level needed (easy, medium, hard).

Looking at the envelope first saves you time and money. It helps you buy the right fabric and supplies the first time.

Choosing the Right Pattern Size

Selecting the correct size is a very important step. Unlike buying ready-made clothes, sewing patterns use specific body measurements. You cannot just pick the size you usually buy in a store. Choosing pattern size based on your measurements is key to a good fit.

How to Choose Your Size

Most pattern envelopes have a size chart on the back.

Take your body measurements: Use a soft measuring tape. Measure yourself while wearing light clothing or underwear.
- Bust: Measure around the fullest part of your chest.
- Waist: Measure around the narrowest part of your torso.
- Hips: Measure around the fullest part of your hips and rear.
- For tops or dresses, you might also need shoulder or back waist length.
- For pants or skirts, you might need waist to hip or inseam.
Compare your measurements to the chart: Find your measurements on the pattern’s size chart.
Choose the size that matches best: For tops and dresses, the bust measurement is often the most important. For skirts and pants, use your waist and hip measurements.
Remember ease: Patterns include “ease.” This is extra room so you can move and sit comfortably. The pattern’s finished measurements (sometimes on the envelope or instructions) show the total size including ease. Don’t pick a size based just on finished measurements unless you understand how much ease you want.

Sometimes your measurements fall between sizes or match different sizes for bust, waist, and hip. In this case, you might need to pick one size and plan to adjust it later (altering sewing patterns). For beginners, pick the size that matches your most important measurement for that garment type (bust for tops, hip for bottoms).

What’s Inside the Envelope?

Once you open the pattern envelope, you will find a few things:

Pattern pieces: These are usually printed on tissue paper or thin paper. They are the shapes you will cut from fabric. They are often overlapped and need to be separated.
Instruction sheet: This multi-page guide tells you everything you need to know to make the project. It includes layout diagrams, steps for sewing, and explanations of markings.

Interpreting Pattern Symbols and Markings

The pattern pieces have lines, symbols, and words on them. These markings are like a secret language for sewing. Learning the sewing pattern symbols meaning helps you read sewing patterns correctly. Ignoring them leads to mistakes.

Here are some common pattern markings and what they mean:

Symbol	Meaning	Purpose
Solid Outline	Cutting line	This is where you cut the fabric.
Dotted Line	Stitching line	This shows where you sew (usually 5/8 inch inside the cutting line).
Double Dotted Line	Folding line	Indicates where a fabric piece should be folded before cutting or sewing.
Arrows (double-ended)	Grainline	Shows how the pattern piece should line up with the fabric grain.
Triangles (Notches)	Matching points	Used to match pieces together correctly when sewing. Often in sets (1, 2, 3).
Dots or Squares	Placement or matching points	Can show where to place pockets, darts, zippers, or match sections.
Dart Lines	Dart lines	Shows where to sew a dart (a folded tuck) for shaping.
Circles with crosses	Button or buttonhole placement	Shows where to sew buttons or make buttonholes.
Slanted line	Fold line	Shows where to place the pattern piece edge on a fold of the fabric.
Text	Pattern piece name, size, number of pieces to cut, style option	Gives details about the specific pattern piece.
Arrows (curved)	Direction of gathering or stretching	Shows which way to pull fabric to gather or indicates stretch direction.

Making sense of pattern markings takes practice. Look at the instruction sheet; it usually has a key explaining all the symbols used in that pattern. This is part of how to read sewing patterns effectively.

Sewing Pattern Instructions Explained

The instruction sheet is your step-by-step guide. Do not skip reading it before you start cutting or sewing. Sewing pattern instructions explained clearly lay out the whole process.

Sections of the Instructions

A typical instruction sheet includes:

Yardage and Notions: A repeat of the envelope information.
Fabric Key: Explains any special instructions for different fabric types (like fabrics with nap).
Pattern Piece Layout Diagrams: These drawings show you exactly how to place the pattern pieces on your fabric. There are different diagrams depending on the fabric width and the size you are making.
Cutting Instructions: Tells you which pattern pieces to cut for your chosen view/style and how many of each piece to cut.
Glossary: Explains sewing terms used in the instructions.
Step-by-Step Sewing Guide: Numbered steps with diagrams show you how to sew the pieces together in order. It tells you what seams to sew, how to finish edges, where to add closures, etc.

Read through all the instructions before you begin. This helps you understand the order of steps and any techniques you might need to learn.

Prepping Your Pattern and Fabric

Before you lay out and cut, you need to get your pattern and fabric ready.

Preparing Pattern Pieces

Identify your pieces: Look at the instruction sheet’s cutting layout or piece list. Find the pattern pieces needed for the view (style) and size you chose.
Separate pieces: Pattern pieces are often printed on top of each other. Carefully cut around the pieces you need, staying outside the lines for now.
Press the pattern: Tissue paper patterns can be very wrinkled. You can press them gently with a dry, medium-warm iron (no steam!) to make them flat and easier to work with. Place a press cloth or thin towel over the tissue to be extra safe.
Cut on your size line: Once flat, cut carefully along the cutting line for your chosen size. If you plan to make this pattern again or think you might need to adjust the size, you can trace the pattern pieces instead of cutting the original tissue.

Pre-Washing Fabric

It is almost always a good idea to wash your fabric before you cut it. Fabric can shrink the first time it is washed and dried. If you make your garment and then wash it, it might end up too small. Wash and dry your fabric the same way you plan to wash and dry the finished garment. This pre-shrinks the fabric.

After washing and drying, press your fabric smoothly. Any wrinkles or creases will make it hard to lay out and cut accurately.

The Fabric Grainline on Pattern

One of the most important markings on a pattern piece is the grainline. This is usually a long line with arrows at both ends. The fabric grainline on pattern pieces tells you how to line up the pattern piece with the threads of your fabric.

What is Fabric Grain?

Fabric is made by weaving threads.

Lengthwise grain: Threads that run parallel to the selvage (the finished edge of the fabric). These threads are usually stronger and have less stretch.
Crosswise grain: Threads that run perpendicular to the selvage (across the fabric width). These have a bit more stretch than lengthwise grain.
Bias: The diagonal direction across the fabric, 45 degrees from the selvage. Fabric cut on the bias has a lot of stretch and drape.

Why Grainline Matters

Placing pattern pieces correctly along the grainline is crucial for how the finished garment hangs and fits.

Cutting on the lengthwise grain usually gives the most stable result.
Cutting on the crosswise grain can add a little stretch.
Cutting on the bias creates a soft drape and lots of stretch.

The pattern designer chooses the grainline direction to make the garment hang and behave correctly. You must line up the grainline marking on the pattern piece perfectly parallel to the selvage edge of your fabric.

Laying Out Fabric Pattern Pieces

Now you are ready to place your prepared pattern pieces on your fabric. This is called laying out fabric pattern. The instruction sheet includes layout diagrams to show you the best way to do this.

Following Layout Diagrams

Check your fabric width: Fabric comes in different widths (like 44/45 inches or 58/60 inches). Find the layout diagram that matches your fabric width and the size you are making.
Prepare your fabric: Most layouts require the fabric to be folded.
- Folded lengthwise: Fold the fabric in half lengthwise, matching the selvage edges. This is common. The fold is parallel to the selvages.
- Folded crosswise: Fold the fabric in half widthwise, matching the cut ends.
- Partial fold: Sometimes you only fold over a smaller section.
- Single layer: Occasionally, pieces are cut on a single layer of fabric.
  The layout diagram will show you how to fold the fabric.
Place the largest pieces first: Start with the biggest pattern pieces.
Position according to the diagram: Place each pattern piece on the fabric exactly as shown in the layout diagram.
Line up the grainline: This is critical! For each piece with a grainline arrow, measure from the grainline marking on the pattern piece to the selvage or the fold of the fabric. Make sure the distance is the same at both ends of the arrow. This ensures the pattern piece is perfectly straight on the grain. Use a ruler or measuring tape to check.
Pin the pieces: Once a pattern piece is in the correct spot with the grainline straight, pin it securely to the fabric. Place pins within the pattern piece, not sticking too far out. Use enough pins to keep it from shifting.
Add smaller pieces: Fit in the smaller pattern pieces around the larger ones, following the diagram. Respect the grainline for every piece that has one.
Check notes: The layout diagram might have notes about cutting a piece on the fold, cutting a certain number of pieces, or flipping a piece over.

Careful layout saves fabric and makes sure your garment hangs correctly. Take your time on this step.

Cutting Fabric From Pattern

With all your pattern pieces pinned down according to the layout, you are ready to cut. Cutting fabric from pattern pieces accurately is just as important as laying out.

Tips for Accurate Cutting

Use sharp scissors: Fabric scissors should only be used for fabric! Paper dulls them quickly. Make sure your scissors are sharp for clean cuts. Rotary cutters and mats are another option for smooth, fast cutting, especially on straight lines or curves.
Cut smoothly: Cut with long, smooth strokes if using scissors. Avoid choppy cuts.
Follow the cutting line: Cut exactly on the solid cutting line of the pattern piece.
Cut notches outwards: Notches are those triangle or diamond shapes on the cutting line. Cut these outwards away from the pattern piece. This makes them easy to see on the fabric edge but prevents accidentally cutting into your seam allowance. Some people snip inwards with small scissors within the seam allowance instead. Find what works for you.
Cut through both layers: If your fabric is folded, make sure you are cutting through both layers cleanly.
Transfer markings: Before unpinning, transfer any necessary markings from the pattern piece to the fabric. This includes dots, squares, dart lines, or buttonhole placements. Tailor’s chalk, fabric markers, or tailor tacks (loose thread loops) are good ways to do this.

Do not unpin the pattern pieces until you are ready to sew that specific piece or transfer all markings. This keeps everything organized.

Following the Sewing Steps

After cutting, you use the step-by-step sewing guide on the instruction sheet. Remember the sewing pattern instructions explained earlier? This is where they become essential.

Working Through the Instructions

Read the step: Read the first step completely before doing anything. Make sure you understand what it is asking you to do.
Look at the diagram: The diagrams help show you visually what the step looks like.
Identify the pieces: The instruction often tells you which pattern pieces you need for that step (e.g., “Join FRONT to BACK at shoulder seams”).
Follow the actions: It will tell you to do things like “Pin right sides together,” “Sew 5/8 inch seam,” “Press seam open,” etc.
Use the markings: This is where those dots, notches, and darts you transferred come into play. The instructions will tell you to match notches or sew along dart lines.
Sew one step at a time: Work through the instructions in order. Do not jump ahead. Each step builds on the one before it.

Standard Sewing Techniques

The instructions assume you know basic sewing techniques. The glossary might help, but you might need to look up things like:

Sewing a seam (usually 5/8 inch unless noted)
Finishing seam allowances (like using a serger, zig-zag stitch, or pinking shears)
Pressing seams (very important for a professional look)
Clipping curves or notching corners

Taking time to press your seams after sewing them makes a big difference in the final look of your project.

Altering Sewing Patterns for Fit

Sometimes, a standard size does not fit perfectly. This is normal! Learning how to alter sewing patterns helps you make clothes that fit you.

Basic Pattern Adjustments

Common adjustments include:

Lengthening or Shortening: Lines are often marked on pattern pieces to show where to add or remove length. You slash the pattern and spread or overlap the pieces.
Blending Sizes: If your bust is one size and your hip is another, you can draw a new cutting line that smoothly goes from one size line to the other between those points.
Full Bust Adjustment (FBA) or Small Bust Adjustment (SBA): These are common for tops and dresses to add or remove room specifically at the bust without changing the size elsewhere.
Adjusting the Waist or Hips: You can grade between sizes at the side seams or add/remove width evenly across the pattern piece.

Making alterations takes practice. Start with small changes or simple adjustments like lengthening. There are many resources online and in sewing books that explain common pattern alterations in detail. Tracing your pattern before altering is a good idea so you still have the original size.

Putting It All Together

Using sewing patterns is a journey from a piece of paper to a finished garment. It involves several key steps:

Picking your pattern and fabric: Use the pattern envelope information to guide you.
Choosing your size: Measure yourself and compare to the size chart, not your ready-to-wear size.
Interpreting pattern markings: Learn what the lines and symbols mean.
Reading the instructions: Understand the steps before you start.
Prepping pattern and fabric: Cut out your size and pre-wash/press fabric.
Respecting the grainline: Line up the pattern piece parallel to the fabric selvage.
Laying out carefully: Follow the layout diagram to place and pin pieces.
Cutting accurately: Use sharp tools and cut smoothly along the lines.
Transferring markings: Get all the dots, notches, and darts onto your fabric.
Sewing step-by-step: Follow the instructions in order, pressing as you go.

Learning how to read sewing patterns and use all the information they provide is a core skill for anyone who sews. Each project you make will build your confidence and skills.

Frequently Asked Questions

How do I know which pattern size to cut if my measurements are between sizes?

Choose the size based on your most important measurement for that type of garment. For tops/dresses, use your bust. For skirts/pants, use your hips or waist. You might need to make small adjustments to other areas. If your measurements are very different, you may need to blend between sizes.

What does “cut on the fold” mean?

This marking means you place that edge of the pattern piece directly on a folded edge of your fabric. When you cut around the other sides and open the fabric, you get a full, symmetrical piece (like the front of a shirt or the back of a skirt without a center seam).

What does “right sides together” mean?

This is a common sewing phrase. It means you place the two fabric pieces with their “right” or “pretty” sides facing each other. This way, when you sew a seam and turn the piece right side out, the seam is hidden on the inside.

Why is the grainline so important?

The grainline affects how the fabric hangs and stretches. Cutting on the correct grainline ensures the garment hangs properly, does not twist, and has the intended stretch or stability. Ignoring the grainline can lead to a garment that does not fit right or looks lopsided.

Do I have to transfer all the pattern markings?

You should transfer the markings you need to construct the garment. Notches are usually cut outwards. Dots, squares, and dart lines are important for matching pieces, shaping, and placing details. Buttonhole and button placements are needed later. Refer to the instructions; they will guide you on which markings are used in the sewing steps.

Can I reuse sewing patterns?

Yes! You can use paper patterns many times if you handle them carefully. If you need to cut a different size or want to make alterations without cutting the original, you can trace the pattern pieces onto tissue paper, tracing paper, or even lightweight interfacing.

My fabric has a one-way print or nap. How does this affect layout?

Fabrics with a one-way print (like flowers all facing up) or nap (like velvet or corduroy, which looks different brushed one way or the other) require all pattern pieces to be laid out facing the same direction. The pattern envelope yardage chart usually lists extra fabric needed for these types of fabrics. The layout diagrams might also show a specific layout for fabrics with nap.

Your Sewing Adventure Begins

Learning how to use sewing patterns unlocks endless creative possibilities. It allows you to make clothes and items that fit you perfectly and match your personal style. Start with a simple pattern, read everything carefully, take your time, and enjoy the process. Happy sewing!