Nice armor!
What I liked: Armor, shading, dark atmosphere, background (fits very well)
What I didn't like: the wings and his.. dress? You should look at bird wings, having a much bigger "armature" near the body, and more feather too, plus they have an elbow... these looks like they are made of jello.. : / for the "dress" this isn't the choice of putting one, but just how it's moving in the wind/leg kick. Just doesn't make any sense to me. Not sure what isn't working.. if I had to draw that, I would take a small piece of cloth and tape it aroung a stick and put a fan nearby.. and take a photo! : ) just my 2 cents
What I would improve: just my opinion.. but I would put his arms synchronised with his legs.. his left arm in front, and his right arm in the back, without forgetting about the little chest twist.. would add alot of quality I think. maybe a sword? else he wouldn't have an armor? I dunno.. ^_^
now, don't get me wrong, this is far from bad, sorry if I went berserk on critique/suggestions.. ^_^
great stuff, else I wouldn't have written this