I find it oddly funny that you used the line tool on most of the background but didn't use the circle tool for the alarm clock. lol. But anyways.
This is nice. I enjoy the colors, and the girl DOES look 10. I'm not sure whats up with her mouth? She biting her cheek? Eating something?
I quite enjoy your clean style of coloring. My critque to you would be to focus more on your light source and really learn how shadows and highlights fall onto a character/environment. Also don't be afraid to exaggerate your shadows! Looking at this I'm guessing you're right handed?
I think I would enjoy seeing some of your sketch work. If you want critique on how to draw human anatomy better, posting something less defined may actually help more. It will allow us and yourself to see where you went wrong. (or right!)
But still overall, well done.