it seems like the head is a little too small compared to the body. Other than that everything looks cool. The good 'ol reaper, everybody thinks he's a bad dude..but really just he takes you away to a better place.. (or a bad place if you're bad) lol
Oh, one more thing, reapers obviously have no life, so it would be perfect for them to stay black as you've portrayed this one. When they take a life using the blade, blood would be on it. You could put red colored blood dripping off the blade to show death taking life, Idk, just my opinion.