work on your composition and general mechanics first, then focus on photoshop. just to show you how powerful PS can be, i literally spent under 2 minutes editing this image with extremely simple tools and commands. spend the time to fiddle around in photoshop, and you'll be rewarded. trust me, the changes that i made were very simple - the Image menu is your friend.

btw, your compression is totally killing the image quality.

ORIGINAL


QUICK-EDIT


i actually went a little overboard with some over-saturation, had i spent some time on it, that would have been a bit more tame.