How to Read a Sewing Pattern (Beginner's Guide)

Every sewing pattern is covered in lines, symbols, and abbreviations that look confusing the first time you open one. Once you know what each mark means, though, a pattern stops being a puzzle and starts being a set of instructions you can follow with confidence.

Start with the outer cutting line, usually a solid line that shows exactly where your scissors should go. Just inside it, a dashed line marks the seam line, the point where your stitches will actually sit once the seam allowance is folded back.

Grainline arrows tell you how to place the pattern piece on your fabric so it hangs correctly once sewn; they should always run parallel to the selvedge. A 'fold' symbol, usually a bracket with arrows pointing to a line, means that piece is cut on a folded edge of fabric rather than as a single layer.

Notches, the small triangles or lines along the seam edge, exist purely to help you match pieces up correctly during construction. Circles and dots mark where darts start and end, where pockets attach, or where a zipper opening begins.

Sizing information, cutting layouts, and yardage requirements are usually printed separately on the pattern instruction sheet, along with a key explaining every symbol used. Reading through that key once before you start cutting saves far more time than guessing your way through a seam later.