C: 3 ways to revamp a button up shirt FITTED BOXY TAPERED Instructions: 1. Try on inside out. 2. Mark what needs to be taken in. Use one of pictures below for your guide. 3. Pin flat. 4. Sew along the markings. 5. Cut out excess fabric leaving half inch. 6. Serge raw edges (or use zig zag stitch). 7. Iron.