I have to agree with what everyone else has said about drawing it first and looking at TONS of pictures to get your anatomy right... not just one. I hope you don't mind, but I did an edit of some of the things I think you need to work on. I kinda scribbled everywhere, but it's easier to show than to explain I think...
The shoulders were Way too broad and the stomach was lumpy so I edited that a bit. The breasts and legs are the problem areas (of course I might be biased since I love drawing boobs) and HER right arm (our left). You have to imagine the way she is standing her breasts won't look like two basketballs that don't shift at all. The face I think needs to be softer and more feminine, right now she kind of reminds me of Disney's Tarzan. Also, make sure if you decide to do hair that it looks like Hair not the back of Darth Vader's face mask.
Hair isn't meant to look like a hat. The head probably needs to be a bit larger as well. I think you just need to practice the female form a bit more before doing something so adventurous!! Hope my ideas were helpful.