I'd say erase the swirlies over his face, since you want that to be really clear and visible. The text doesn't really fit either, I'd say make it a color from the render, not just black. Finally, you can really tell you did the distort effect since little parts of his head are floating around, and I'd say try to avoid it being that obvious if it doesn't look good.

Overall I don't think it's really that bad though! =) Just offering what could be worked on.