Start with a garment that fits you well

The fastest way to make a pattern is to take apart a piece of clothing you already own and love. Pick something that fits your body the way you want the finished garment to fit — not too tight, not too loose. The garment becomes your template.

Lay the garment flat on a large surface like a cutting table or clean floor. Smooth out all wrinkles and folds. If it has buttons or a zipper, close them so the garment lies naturally. You are about to trace its outline, so make sure every edge is flat against the surface.

Key Takeaways

  • Tracing an existing garment that fits well is the simplest method — you place it on paper, trace the outline, and add seam allowance.
  • You need large paper (pattern paper, kraft paper, or taped-together newspaper), a pencil or marker, a ruler, and weights to hold the garment in place.
  • Seam allowance — the space between the edge of the fabric and the stitching line — is usually 5/8 inch for most sewing projects.
  • Mark grain line, notches, and any darts or pleats directly on your pattern so you remember where they go when you cut fabric.
  • Test your pattern on scrap fabric or muslin before cutting into your final material.

Gather paper, pencil, and weights

Pattern paper is sold in rolls at fabric stores and online, but it is not required. You can use kraft paper, butcher paper, or even newspaper taped together with painter's tape. The paper just needs to be large enough to hold the outline of your garment piece.

Use a pencil or fine-tip marker — something that will show clearly on the paper but will not bleed through. A ruler or straightedge helps you draw grain lines and seam allowances in straight lines. You will also need weights to hold the garment in place while you trace: books, pattern weights, or even coins work.

Trace the outline of each piece

Place your paper under the garment piece. Use weights to hold both the garment and the paper still. With your pencil, trace around the edge of the garment — the actual outer edge where the fabric ends. Trace slowly and stay as close to the edge as you can. This line is called the cutting line.

Trace every piece separately: front, back, sleeves, collar, pocket, whatever the garment contains. If the garment is folded (many are sewn with the fabric folded in half), unfold it before you trace, or you will end up with only half a pattern piece.

Mark the grain line on each piece. The grain line is the direction the threads run in the fabric — usually straight down the length of the piece. Look at the original garment to see which way the grain runs, then draw a straight arrow on your pattern showing that direction. Grain line matters because fabric behaves differently depending on which way you cut it.

Add seam allowance to your pattern

Seam allowance is the space between the edge of the fabric and where your needle actually stitches. Most sewing uses 5/8 inch of seam allowance, though some projects use 1/4 inch or 1/2 inch. Check the sewing pattern or instructions for the garment you are making to see what seam allowance it calls for.

Using a ruler, measure 5/8 inch out from your traced line all the way around the piece. Draw a second line at that distance — this is your cutting line. When you cut fabric using this pattern, you will cut on the outer line, and the inner line shows you where to sew.

If your original garment already has seam allowance built in (which most store-bought clothes do), you need to subtract it. Measure the seam allowance on the garment itself, then move your outer line inward by that amount. This step is straightforward to skip and straightforward to get wrong, so measure twice.

Mark darts, notches, and construction details

Look at the original garment for darts (the triangular folds that shape fabric to your body), pleats, pockets, or other details. Trace these onto your pattern in their exact location. Use a ruler to draw darts as straight lines. Mark notches — small cuts in the seam allowance that help you line up pieces when sewing — with small perpendicular lines on the seam allowance.

Write notes directly on the pattern: "cut 2" if you need two of that piece, "fold" if the piece should be cut on a fold of fabric, "grain line" with an arrow. These notes prevent mistakes when you are cutting into expensive fabric.

Test your pattern on scrap fabric first

Before you cut into the fabric you actually want to use, cut one piece from scrap fabric or muslin (a cheap, plain cotton fabric). Sew it together using the seam allowance marked on your pattern. Try it on or hold it up to check the fit and proportions.

If something is too tight, too loose, or sits wrong on your body, you can adjust the pattern before you waste good fabric. Mark the changes directly on the pattern with a pencil, then re-cut and test again if needed. This step takes an extra hour but saves money and frustration.

Refine and store your pattern

Once your test garment fits the way you want, go over your pattern with a permanent marker or pen so the lines are clear and will not fade. Reinforce any creases or folds with tape on the back so the pattern does not tear when you use it repeatedly.

Store your pattern flat in a folder or envelope, labeled with the garment name, the size, and any notes about fit or changes you made. Patterns last for years if you keep them dry and flat. You can use the same pattern to make the garment again in different fabrics or sizes.

Frequently Asked Questions

What if the garment I want to trace has a lot of stretch or drape?

Stretchy fabrics like knits or jersey can shift while you trace, making your pattern inaccurate. Pin the garment to your paper at several points before you trace, or lay it on a flat surface and use many weights to hold it still. Trace slowly and check that the garment has not moved as you work.

Can I make a pattern from a photo or drawing?

Yes, but it is much harder. You need to know the actual measurements of the garment — the length, width, armhole depth, sleeve length — and draw them to scale on your pattern paper. This method works best if you have a photo with a ruler or coin in it for size reference. Tracing an actual garment is faster and more accurate.

Do I need to add seam allowance if the pattern already has it?

No. Measure the seam allowance on the original garment, then subtract that amount from your outer line. If the garment has 5/8 inch seam allowance and you add another 5/8 inch, your finished garment will be too small.

What if I want to make the garment bigger or smaller?

You can grade your pattern — make it proportionally larger or smaller. Measure how much bigger or smaller you want it, then add or subtract that amount evenly from all sides of each piece. For example, if you want a shirt 2 inches wider, add 1 inch to each side seam. Test the graded pattern on scrap fabric before cutting your final material.

Can I use tissue paper instead of pattern paper?

Tissue paper is too thin and tears easily when you cut fabric using it as a guide. Use kraft paper, butcher paper, or actual pattern paper. If you are short on paper, newspaper taped together works well and costs almost nothing.