Hi!
Here\'s more direct link to the sketch -

Good job DivineLight, I like it! Not of the most athletic sort, but very beautiful still. Just like the sketch. Good modeling. I\'d be interested to know the polygon count.

I\'ll agree that she\'d look better if the chest was flattened a bit. I may have overdone it on the sketch.
I have little to add to what tips you\'ve already been given. Hmm, maybe you could make the tip of her feet less pointy (vertically). Wrists could be just a bit thinner too, in the side view. As a separate mesh, her hair could sway more realistically, without affecting the shape of her neck.
Right now it\'s a good looking statue

it still needs more work to be a character, so don\'t give up.
To rosmerelmer: Hmm, Blender smoothing works good with me. Could be that the corresponding vertices are not joined, so the program thinks that the object ends there. Also check that you\'ve applied the smoothing to the whole object and not just some of the vertices. Can\'t say more without more information. Be sure to download the newest version.
Ps. Can\'t agree with Moogie about the waste of time thing; you\'ve done likeable fanart here, had fun, gained experience, inspired some people, got new friends...
Pss. Does your name lack an \'L\' there on the pic, or is it just a style thing?