well, for one the neck is a bit to short, so that counts as one thing you need to change, the next this that you need to change is the eyes, they're a bit to small, aside from that, everything else looks good ^^
Hmm... His helmet looks too clean. The rest of the armor, especially the kama, indicates that he's a vet and that his armor is battle-proven, so shouldn't he have a few scratches on his helmet? Just can't have a new helmet on trusty armor. And... that's all I can see... Keep up the good work, by the way.