I think it's a very good effort! And a few tweeks next time will be amazing!
Couple of things that I notice,
The main light is coming in to high, resulting in the light being a bit hot on her back and her face a bit shaded, lowering the light would solve this and would put a catch light in her right eye at the same time.
I'm not sure if you cropped this close in camera or cropped this way in post? Either way its a little tight and would benefit from a bit head room to the left and top of the image.
I think the wb is a little warm in the 2nd, I prefer the 1st.
Hope this helps!