There is hope for you yet! Generally speaking this is very good - for sure a whole mile better than half the unscouted stuff I see on here. You've got most of the face, hair, muscle, and especially the clothes down and averse to some of the previous comments I actually like the androgynous look and that she doesn't have the typical bone structure of an anime character; you're still developing your style so that's not what needs to be addressed here.
Before any of that you need to get your proportions down ask yourself would anyone standing like that have their shoulders so rigid? I doubt it. Look at the hands, then position your hands the way you're drawing hers and see what doesn't correspond, for example the right thumb is too big for the hand, and the left hand wouldn't rest like that on her hip. You must get that accuracy down before you stylise it otherwise it will always look off.
The other thing is her legs, the way you have her hip popped would suggest she's transferring her weight to that side, which means her legs are way too far left for her to have any balance. Hips down the legs need to line up with the rest of the body. This will also give her a female structured curve and make it more obvious she's a girl, just bang on big tits and hey presto it's female is something that gets on my tits as I see it so often and it's just a ridiculous notion. I think you missed that because you're referencing a male and when people reference they forget what needs to be changed in order to a) make it yours and b) make it work. It took me a while to learn that but it definitely helps.