Originally Posted by BenDover

muscle sets are difficult, because you're working on boxes, not arms, so no matter what you do, the final result will put off as many people as it puts on.

anyway, my main issue is the colours, he looks dead, or sick, or dying, no life in those colours. its all greens browns and vomits.
contrast is too high from light to dark.
anatomy of the arms isnt quite right either, have a look at some proper sketches to see what a trained soldiers muscle definition looks like