Seamstresses are provided with the pattern, with the intent of using as little fabric as possible. Patterns will specify whether to cut on the grain or the bias to manipulate fabric stretch. Special placement may be required for directional, striped, or plaid fabrics.Supporting materials, such as interfacing, interlining, or lining, may be used in garment construction, to give the fabric a more rigid or durable shape.
Before or after the pattern pieces are cut, it is often necessary to mark the pieces to provide a guide during the sewing process. Marking methods may include using pens, pencils, or chalk, tailor’s tacks, snips, pins, or thread tracing, among others. In addition to the normal lockstitch, construction stitches include edgestitching, understitching, staystitching and topstitching.Seam types include the plain seam, zigzag seam, flat fell seam, French seam and many others.