Max Surikov , Jul 09, 2009; 07:35 p.m.
Ben, I once did bodybuilding contests before kids and had moderate success at All Natural Events, but now I am a photographer. The way to accentuate muscle striations is to have the light fall on your body from different parts of the body. You then have to balance all the lights to make sure that light areas and contrast areas are well defined. You can get some spot lights at Home Depot instead of strobes as indicated in the diagram.
Good luck with the competition and upload the pics once you are done.