Have to be honest, I personally felt as if certain parts of the limbs were too skinny, the feet didn't seem to be drawn correctly, the hair is too clumped together, you should have drawn skinnier pieces of the hair, and the lips didn't seem correct to me either they were seemed too close to the nose, also one last thing the hair that is "floating" looks weird to me. I'm sorry if I seem mean by judging your art it just doesn't seem too great and or good. Try improving on the small details if you want realism. Good luck anyway, hope you can improve :)