I would say get rid of the same looking sides of the sig. Its a nice idea but it really doesnt work here I dont think. To many fx over the render and its not blended enough The two things on the left and right of the render are to big and take up to much space to even have any sort of detailed bg, except for the little space you have by his head. The sig looks very monotone, use different colors, not different shades of one color. Your currents are a lot better.
