Actually...
LordKernkraft kind of had a point. He could have said it nicer, though. I'm not saying I'm any better, but the breasts do look a little off. After looking at this awhile I realize it's mostly just the way the fabric falls ON her breasts -- generally a close-collared shirt isn't going to have that much heavily detailed cleavage. I recommend looking up some fabric and clothing tutorials. You also could have shaded her hair, but for 10 minutes I'd say this is good. Other then that though I like the smooth coloring and the design for her face paint.