Use #6 plastic container. Cut plastic. Size for bracelet - 1.5 by 1.75in before shrinking. Design using perm markers. Note: Dark colors will appear black after shrinking so use sparingly! Trim corners to round edges. Use standard hole punch to make holes. Preheat oven to 250, bake on cookie sheet lined with parchment paper. They should begin to curl after about 30 seconds. Watch them. They'll curl a couple times & eventually flatten. Once flat they're done shrinking. Sand any sharp edges.