What you need:
crayons
veggie peeler (or cheese grater, or knife)
wax paper
iron (for mom, obviously) - set to low
protective surface - newspaper or table cloth
dixie cups (optional!)
1. Take wrapper off crayon
2. Shave crayon to get little pieces for your masterpiece
yet another use for dixie cups!!!
3. Spread crayon flakes on wax paper (less is more, I found this out the ugly/hard way)
Enjoy!