Captain Hook Diy Costume . Cut a straight line directly down the center front of the sweatshirt. How to make a captain hook costume with a sweatshirt: Halloween 2018 Postmortem DIY Captain Hook and Cap’n Crunch Sewing from sewingandcocktails.com The anatomy of a diy captain hook costume, from head to toe. Diy lady jack sparrow costume. Cut the bottom ribbing and wrist section off.