I'm not one to be giving pointers, but let's start with how big it is. It kind of takes away from the main focal point, and puts it everywhere.
Whatever is all over the picture that looks like a bunch of brushing with a default brush looks ugly. I would recommend removing it. Besides these things, it doesn't look like you did much of anything else. I notice you enlarged him in the background, and that looks fine I guess. I don't know. Sorry if my critique was shit.