Brian "Panda" Choi said:
Check the proportional size of your head relative to your body. Yours is way too large. If you use the head to measure the length of the body, it should be at 6.5 to 7 heads high for a heroic figure like Spiderwoman. Using your current head, you're clocking in at around 5 to 6 heads high for a length.
Also the head is too large, the area under the breast need to be smoothed out so it appears she is wearing spandex. Also what the others said.
Here are some more updates before I start to texture.