Eh, yeah i kind of agree with Draucia. I'm fairly new to graphics but try blending your render into the picture more (Don't bury him) and the ripple effect doesnt really make it look any better.
Maybe do some overlay layers with gradients and smoke effects, and play with the lighting and do use some "fractical brushes" ( don't flame me if I'm wrong, but I'm not sure if this is what they are called.