I'd really suggest looking at some shading reference, right now your shadows don't really make sense. Cloth doesn't hang like that either. It looks almost like you did the background with an airbrush, so it looks very soft and undefined, almost as if he's standing on green smoke.I would like to hear your opinion on this tablet drawing of the Wizard from Terraria which I made in about an hour.
I'd really suggest looking at some shading reference, right now your shadows don't really make sense. Cloth doesn't hang like that either. It looks almost like you did the background with an airbrush, so it looks very soft and undefined, almost as if he's standing on green smoke.
Still, looks great for a beginner. You gonna be posting more?