Ok, here is a simple tut on stencileing flames.
Disclaimer: Drawing 'hot rod' style flames takes some practice, skill, and some luck. Also this mod REQUIRES a stedy hand.
Materials:1. Xbox (duh)
2. Masking Tape
3. X-acto Knife
4. Plain Paper

There are three ways to do this. I'll cover two of the three. The thrid is useing painters tape, traceing the flames, then cutting. I didn't cover this becuase that way takes ALONG time. But apply the same idea from method #2, replaceing paper with tape.
Method #1Take one sheet of paper and, on a flat smooth, surface draw the flames. Basicly you want to follow the curves of a females body. I suggest getting alot of paper and drawing flames and practiceing untill you get it right. I know that if I start drawing the first fales I draw suck, but as I go along they get better. Here's my example:

When you're done drawing, cut out the flames with a pair of sharp, small sissors. Tape it to you box, leaveing no paper that is lifting.