No, Yoshi's right. She appears to me like a male base with female bits on it. You can kinda tell a male drew it
It also seems to me like you studied comic book art a lot without having studied the anatomy and basics that the art itself is founded upon. So, as far as "how to improve" goes, try to get away from superreality for some practice, and study the real figures of real people. Yeah, practice anatomy and realism, I said it, it never stops being a cure
As for some specific crits, things that make this figure seem more masculine are the narrow hips with masculine muscles on it. Muscles on females in art is not a bad thing, I like it a lot, but muscles develop on females a lot different than on males. Again, a good reference would be female swimmers or runners.
The arm is too thick without being defined. Considering how much muscle she has on the rest of her body, that arm, if that big, should be shaped, not flat. It appears just like fat, when the rest of her is obviously *not* fat. The boobs don't hang like boobs, they look like inflated pecs. So yes... a lot of naked woman studying for you. I recommend gwool.com. Nice composition pics there.
A lot of your problems can be solved by studying life, but you definitely have a really good base to start from. The composition is very nice, and I like the black and hatching. Good work also with the hand in the cloak.