Commercial patterns are usually done on tissue Paper. Since tissue paper is not bulky, it allows many piece of pattern to be packed compactly in an envelope. In commercial patterns seam allowances are included for safety. Patterns of established companies are usually printed and marked clearly with straight grain lines. Seam lines, cutting lines, darts, centre lines and all the necessary construction details. Good patterns are carefully labeled with the following information; the pattern size, name of each pattern (back, front, sleeve etc), number of pieces to cut horn each pattern piece etc. In addition some companies provide instruction sheets explaining the steps involved in using the pattern to cutout the garment, transferring pattern markings, and constructing the garment.

3. French seam: This is also called as double seam and is used on transparent and light weight fabrics, especially on baby clothes and delicate blouses. Such as voile organdy, muslin French seam etc. It is a neat and durable finish, as the raw edges are completely enclosed. Do not use this seam on curves such as armholes and yokes stitched first. Plain seam must be trimmed and then stitched to prevent wrinkles seen on the right side. The two pieces of materials to be joined are placed together with wrong sides facing. Work a row of stitching 1/8 outside the seam line towards the raw edges. After stitching, trim the seam allowances to less than 1/8. Press the seam and turn the work so that the right sides are together.