Almost all of the logos are at psdcentral too, that's where I got most of mine for the cut gallery. Too bad when I add them in they get choppy for some reason.
Just another tip is to cut out the extra transparent background on your cuts. I usually use the crop tool, some others will use the cut transparent background tool.
looks great man, other then the little big of background on his left leg right by the sock. The ball is a little choppy as well, I like to use the elliptical marquee tool for that.
Maybe try shrinking it down a bit and see if it will fit? IMO nobody is going to need a pic so big. I also noticed you missed background between his right arm and jersey