eh i dont think the blue background suits ironman well just looks plain to me just my opinion i think its ok just pretty plain
i think i understand what you were trying to do (with the blue bg and the blue circle on his chest...) but it would be better with a diff color bg,and overall,it needs a lot of work. text is bad,and the blending could be much better as well. keep working on it
color balance buddy bg is just random with a render ontop. work on it more to make it flow and have a direction of flow not just everywer