Her figure should be 2 heads wide, especially around her shoulders. I believe you have it around maybe a little more than 1 head wide but it's hard to tell from the angle. Her hands are too long and where her skirt ends is pretty much about the area that her crotch should be given the location of her tiny waist. Because her hips and thighs are not full enough, her legs are really skinny as a result and makes her resemble a little more like a trap than anything to me right now.
As for her facial features, I'd say move the mouth and nose up a little bit. It's up to you if you want to make the eyes a little smaller or prefer the really big Kanon-like eyes. Remember that the lips should be pushed a little further back than the nose or else she might possibly be confused with a chimpanzee.
- Wider shoulders and slightly more upper body mass (but not to the point of a manly figure, obv)
- Fuller hips (should bring out the butt figure as well and fill out the thighs more)
- Not as long/manly hands (NOT to be confused with smaller since you still need to stay in proportion with where a normal woman's arms should meet at the thigh)
- Bring the skirt down unless panty shots are your thing
Good job though. 3D modeling, especially manipulating polygons and such, can be pretty challenging. I'd recommend having bitmaps of a woman's figure (top, right, front) and setting them as the background in their respective camera views when you're modeling. I did this when I used to do 3D modeling as well, but for vehicles, and it works pretty well as a general guide.
tl;dr Feed her a little bit of American food