You're mixing styles and getting a weird mix of the "uncanny valley" and some sort of anime-ish outcome. Look at pictures of the human anatomy, its very important to gain an understanding of the underlying structure of the human form before attempting a semi-realistic 3d character. Especially in the case of women as most people tend to draw / model them according to these strange predetermined ideas of what a woman looks like in their heads.
The head is your biggest issue here, Id suggest revamping the entire style. Dont try to make her so realistic, simplify some features and exagerate others. Really though, look into human anatomy, it'll help you so much.
Her feet are fairly rigid and square on the bottom and too rubbery on the tops, give them more of an overall foot-like form to them. They look a bit like jelly beans right now.
Its already been mentioned that the breasts are too large and also too bulging, again, check out human anatomy.
Other than that, in terms of rigging purposes, a lot of people have it in their head that modeling their characters in this sort of robotic-like rigid T-pose is the way to go. In actuality, the goal is to model the character in a sort of overall neutral, relaxed pose. It'll greatly lower the chances of rigging issues later on.
That means drop the arms a bit (roughly 30 degrees from the horizon is a good relaxed angle while maintaining the general t-pose), curl those fingers in a bit, and give the legs a very slight bend. The main reason for this is at any point on your mesh, it will more often than not be closer to it's neutral pose during animation for the majority of the animation than any other pose. If you model the mesh already in this fashion, you'll ensure more control over how things look in the end.
Finally, something to take note of for the eyes is the white space. In real life, when a human being is relaxed and in a neutral state, there is a little bit of white space below the pupil, yet the upper eyelid overlaps the top of the pupil. Again, it has to do with the muscles being relaxed. Gravity pulls down the lower eye lid all the way, while the upper eye lid is pulled down but remains open slightly due to the muscles in the face.
Taking one last glance at the photos, the mouth seems a little too low on the face as well. This is another tendancy for artists that havent studied human anatomy very much. You have two options here, either a) move the mouth up or b) move the eyes, ears and nose down increasing the forehead space. I would suggest going with option b as once again, human beings generally have more forehead space than the average person thinks. However you could probably get away with option a in your case as you already have a fairly decent sized forhead. If you go this route, be sure to lift the chin along with the mouth to maintain their distances from each other. If I get some time Ill alter your screenshot to show you what I mean.
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Alright did a really quick mockup of some of the changes Im talking about that I personally think would bring this character to life. (Minus the breast reduction).
You'll notice I gave her some bangs in front of her left eye. Things like this that break up the symmetry can do a lot. In the case of the eyes though, they help even more because the eyes are one of the most important things that need to be right in order to really sell the face to the viewer. Covering one eye up cuts your job in half. It also allows you to later on work with some more interesting lighting over the face.
Other alterations I made include lifting the tip of the nose up, pushing the cheecks in a bit, and giving more suggestion to an upper lip to really sell that this is a woman (the "no upper lip" thing is something that really pushes towards males instead of females). Lastly, I altered the shape of her head to skinny up her neck a bit and give some more curvature and interest to the back of her hair. And then I incorperated my previous suggestions of relaxing the eyes, moving the mouth up, etc. Something I noticed when looking closer at the eyes is you havent actually given any geometry for any eye lids at this point in time. Im not sure if you were planning to or not but I recommend you add it soon as eye lids are big part of the head. Avoid just having these "cut out lemon shapes" for eyes.
Again, these are all just suggestions, you dont need to use them. Ive been in the field for quite some time now so I thought Id share my thoughts.
