In one sentence, describe what the following article is about:

Find a skull and crossbones design in the iron-on patches section of a craft store. You could also cut out a skull and crossbones from an old t-shirt. Stitch the skull and crossbones design to the front of the hat if it's made from fabric. If you're using an iron on patch, follow the manufacturer's instructions for attaching the patch.

Summary:
Decorate the hat.