I tried a few small edits.
1. added a light source in the upper left
2. shoulder and arm placement felt awkward and unnatural - I brought the arms closer in to the body and lowered them a little. The shoulder armour is more pauldron-like now.
3. For the feet, how would you feel about boots?
4. Shortened legs and made the pants a bit poofier, since that seems to be the style you were going for.
5. Made the colours have a bit more contrast. Shadows are bluer and darker.
Just a few ideas to consider!