Prerequisite: Sewing Machine Boot Camp class or equivalent experience on the industrial sewing machine. Have trouble sewing collars on your garments? Collars frame the face and add striking style to clothing, so it’s important to sew them perfectly. Learn how to use and sew various collar styles: the convertible collar, Mandarin collar, and classic two-piece shirt collar. Then construct an all-purpose sport shirt/Hawaiian-style shirt with the collar of your choice, and give your garment a polished, professional look.