Heyo, one of your many adoring fans here, to give you one of those much wanted critiques you've been lookign for.

In my opinion, the shading and lighting for the pic, are both epic, the skill of your technique was amazing to begin with, so really no problem there. What i think you should do, to better your art, is have some slightly more difficult backgrounds. what you consider difficult is up to your mind to decide, but i think that it could be worked on. Your focus on the 'eople'(to be used loosely) in the pic is good enough. But hey, that's just what I think x3