The two pics of the players are too small and it's also a little too loud and busy, maybe make the players a closer color to the background. Still god for a first sig though, you used some effects that noobs usually don't use.
i dont remember the exact links but the background i used some abstract brushes then messed around with the color balance, if you cant find it, type it into the adobe help thing.I also used some pictures and overlayed them