I think its a great start, I am very impressed and can't wait until you finish.
First thing I see are how clean the eyes are, they are almost completely white. Making them a bit more yellow will help and also being able to see veins and the redness on the side. People connect with the eyes so spend time making sure they are right. I would take some time with the reflections also, that hot white spot definitely shouldn't be there and the wetness should come don't just a tad. I don't know know what your going to do for a background but i think a reflection of an environment in the eyes always helps.
I'm not sure what era she exist in, but the lips just seem flat, especially the reflection. Unless she is wearing lip gloss, then they would be super reflective.
Skins great in my opinion, can't wait to see more!