This is the design that my friends like the most out of my safety pin jackets, and a few people have told me they'd like an instructable on how to make them. So here we go! A more general set of instructions for a safety pin jacket is available here.
1) Jacket (or whatever you want your design to go on)
2) Sizes 1, 2, and 3 safety pins. (This jacket used around 200 size 1, 4 size 2, and 14 size 3 steel pins)
4) Light colored pencil or chalk
5) Needle and thread