Not quite finished, but critique for me?
 

I drew this in my Government class. My friend was turned with the back of her head facing me. She loved it, but I want to know, what do you think? Be serious, and don't be afraid to be mean. I need to know how I can improve myself as an artist.

http://i14.photobucket.com/albums/a3...ngoriginal.jpg

The jaw is too rounded
It makes the face bulb out too much, and ruins the anatomy
Also, the neck seems like it needs to be bigger and it doesn't seem 3-D enough (like its cut off and wouldn't show up on the front like it should)

Actually, I had a lot of trouble with the neck. I couldn't figure out how to place it so it looked good. What should I do to fix the neck?

The jaw line extends too far into the neck. Well, it probably shouldn't extend into the neck at all. Erase a bit of the jaw line near the left side of the neck (where the jaw and neck are touching, and the jaw extends into the neck) and it should look fine.

My insturctions are probably very confusing...Sorry. ^_^'

I thought the same thing, but if I erase that line it looks wrong for some reason. Maybe the neck line should be extended instead.

Maybe if you were to outline the difference between the bottom of the chin and the jaw bone?

I think all you have to do is simply to draw more from real life :)
because all the problems that I see in this drawing is simply because from the lack of practise and that's all :D