I'm no expert (as I am still learning) but perhaps the Spain flag in the background could be a little more clearer (less transparent) & the pic of Villa on the left could be less transparent (or more clearer)
Because a n00b who hasn't read the graphics rating would give it 5 out of 5 while a knobhead would give it a 1 for stupid reasons such as noit liking the artist.
The middle player isn't stretched in the proper proportions, the flag is stretched a little wrong as well and the border is far too harsh. However you're getting better