Yet again you manage to amaze me with your ability to capture my attention and draw my eye through the artwork. But above all, your use of harmonious colors is by far the best aspect of this piece, particularly in the girl's clothes. The red of her shirt, the green of her camera, the blue of her shorts, and the apricot hue of her skin all go very well with each other, and are tied together with the black and white you use in several places. Her brown eyes are brought out by these colors - they almost look gold! I can think of just two points on which you could improve.
First, the red of the girl's shirt and the pink of her hair - generally, red and pink aren't colors you want to use in the same picture, at least not when they're two of the main colors. It's the same reason you're never supposed to wear red and pink in the same outfit, unless of course it's Valentine's Day - it looks kind of tacky.
Second, the color you chose for the background - the same shade of pink as her hair. You might've been better off using a color that isn't in as much of the picture - the green from the camera, perhaps - in the background, instead of using the same color in such a large quantity.
I admit, I'm usually a fav and runner, but I swear to god this picture- I just fell in love with it. The style and the way you finished it really - Just- Holy hell, I'm gonna become a bloody stalker of your work with the way I'm flicking through this stuff! But just- Goddamn, this is beautiful- I want to stick it up on my wall and ogle it.
Sorry if that sounds creepy, I just- wow. Almost left speechless.