This is fantastic. Straight up. the only one minor thing that I can notice (and it may just be the lighting or my crappy eyesight) but the whites of Mickey's eyes seem to blend with his skin tone, whereas the majority of the other characters seem to 'pop'. Like I said, nothing major. The reflections are spot on too. Overall fantastic.
Wow this is an amazing collage!! It really takes me back to my childhood. Keep it up!! I especially love what you did with Mickey, Donald and Goofy, its cute! This is definitely going to be my new wallpaper.