Lol, I think the bullet hole thing would depend on the school, country and standards of that region, but this would be perfect to do. I would say skull but I would need more time. Here is an idea, take Mitch's first 4 tutorials and recite them by heart, doing all the funny stuff to, but show how to do the dots, lines blending lines and such, but do them in a design so the end result is a skull!!
Josh