I only looked over your first drawing so the first thing that jumped up at me is the difference in the size of her feet. The right is bigger than her left. Now, if her left leg was positioned so that it goes back a bit, it would be fine as this will involve perspective (i.e. further parts of the body tend to look smaller than those up front) but this doesn't seem to be the case. They're both on the same distance from the viewer.
Also, for a woman to have such a thick neck, she doesn't seem to have the bulk to go with it.