The composition is really wierd, im not too sure ironman goes well with his surroundings. The depth isn't bad. The effect's could be better. The lighting isn't bad.
Yeah, its really hard to take a render that has the draw lines like a cartoon, and make it blend into anything. Looks good though in my opinion.
I had a different render earlyer but it looked crap when I got a litle further in the sig so I took Iron man