I felt like I have seen this before. I guess it's just a design that a lot of people have used. Because of that, I can't really give it a higher score. I still like the shades of blue you use. His arms seem to really light up what's going on. I appreciate the detail put into everything.
The shading with the background was pretty good. I like how it's at least not a blank background. I think I would rather see this guy in action. I think the head and feet are a bit too small. Well, I don't know much about how to do body proportions anyway.