you're just using a lot of brushes you downloaded, right? because some of the streaking in the background looks like it could be someone else's art, but i do know that people will make these things available through download, which is why i'm asking before i curse at you for stealing. i'm sorry if this sounds dickish, it's just the only way i know to be.

if you want an easy way to have the guy blend better with the effects and his background duplicate the skater image and cut-out the render of the skater. thus, leaving you with the original bg that still has the skater should you have a mis-hap when it comes to the cut-out.. and your bg so you can incorporate your graphics more. this honestly looks like a hot mess of a bunch of jumbled ideas you had. also, do you know about masking layers? can work wonders for texturing your font or a certain aspect of the image.