Corn Meal
Corn syrup
Watercolors (or any available makeup; reds and brown are better)
Powdered geletain (make into a liquid, but it has to be cooled)
1. Apply thin coat of syrup on skin in the shape you want the scab to be.
2. Cover corn syrup with thick coating of cornmeal. Let sit for a few minutes. Tap off excess cornmeal.
3. Color cornmeal with paints or makeup.
4. Using a paintbrush, apply cooled geletain liquid gently over and around the scab. Let dry.