Taking another look at it, I have a couple questions, and a couple things.
The thing is the outline colour on the gloves, compared to the outline of the armour, is too light.
The first question had to do with the second thing. Is the orange circle the light source? It looks like it could be for most of the shading, but then in others is seems like it isn't. the main thing here is his left (our right) leg. Its completely reversed on that leg. The other leg looks fine, as the light still seems to be coming from the left, but blocked by the rest of the body somewhat.
The second question is the armour. I tried to keep the style of it in the edit I made, but to be honest, it confuses me. I have no idea what's going on with it. Only the shoulders make sense to me. SO I just want to know how it goes together, or if you used a reference, what it was