I think the design is ok .. just a few points:
1) The color levels on the pics are not in sinc - meaning that some pics are more red, yellow or perhaps brighter than others .. so perhaps line them up a bit more.
2) I'm not a big fan of introducing grey into designs purely becuause I think it takes away from the warm flesh tones from pics but that's just my own personal taste.
I guess the thing to keep in mind is that sometimes even the worse looking designs sell well so test it out and see what happens
