>>945485I would offer you some links on how to draw animu children, but there's no use just copying other works. You need a tutorial on anatomy real and or anime. (But it's much easier if you gain an understanding of human anatomy)
If you want to improve search up some anatomy guides, practice till you have a rough understanding how limbs bend, muscles look and how it all fits together... ohh and proportions (proportions are very important). After you can sketch out all the various parts fine, there should be no problems just adding outlines.
I can't provide any external info about anime since I don't bother.
Good luck.