As a sewing machine operator, your duties are to sew, join, gather, hem, and reinforce materials using an industrial sewing machine. You may select a pattern for sewing, determine what type of fabric to use, and adjust your equipment to ensure it is capable of creating the intended product. If you work as a seamstress on an industrial scale, your responsibilities are to produce a significant number of garments while adhering to your company's quality standards. If you work independently or at a tailor shop, you may sew original garments and perform alterations on existing clothes. In some positions, you may be asked to make decisions about sewing garments, such as what type of stitch to use, or help your company create a plan for other dressmakers to follow.