The depths in shading with posture is great, though a more slanted stance for our protagonist would've been better if he's going to be in a more combative stance. Though that might've been remedied by that cue in the right hand in a middle of forming a fist, even then that'd be tucked in if he was preparing to strike.
I'd definitely love to hear your end of this whole illustration, and I want so say again that this is pretty good mate