As always not tearing it apart just giving you my advise.
The background is not as plain as your Mauer one, but it still could use some work, stocks. Add more. It wont hurt trust me. More stocks would help the player to not stand out. Add one or two more stocks in the back and one over Parise to blend him into the sig. You know what I mean? I know its not easy, but after working at it you will get the hang of it. Dont get me wrong I am far from perfect myself still learning all the time, but I feel like I at least got the concept down from working at it. One more thing is the text. Maybe put that under the top stock that way it doesnt stand out too much and its not too sharp you know. Honestly it was the first thing I saw and thats not what you want.
I know it sounds all negative again but thats how you learn. The guys here and on other sites did the same with me and I feel like their criticism helped me out a lot. Hopefully you do the same. I do see potential you just have to add a little more depth. You are on your way man keep at it.