Justin, few comments regarding your shots:
-I like the play on light....but there seems to be a lack of light
-Boost the exposure a tad? +0.5 maybe?
-The black and whites look better than the colour one to show the tone of his muscles....I guess thinking "Greek statues" would be what I'm referring to.
-Seems to be two light sources (window to left, strobe to right?)...what about trying to lite one from the top to give some highlight?
Other than that, glad to see you experimenting!