not too shabby man. ill give some suggestions...
put the border on the top, so that the player pics arent breaking it up. right now it also looks green..id change that to a more cowboys themed color...or black or white. it just doesnt fit with green.
somehow make whatever you have in the background not as much of a focal point. you can fade it, make it darker or lighter depending on the sig...blur it...etc. you just want the players to be what people look at, not the background, so you need to have them stand out by diluting the background. the helmet stretch was a good attempt, but i think you can do better. stadium would work...of even an oversized cowboy logo, multiple logos..or combinations of things. hell...i even put completely abstract things like flowers and sidewalks in my backgrounds sometimes
about the text, i dont think its always needed. sometimes i think text ruins a sig...just depends. with 3 player pics, the sig is already getting crowded, so sometimes its hard to make it look right.
keep em coming dude