I like the lighting and pose you attempted here. The lighting makes it very interesting. I think the eyes are not aligned quite right (try flipping the drawing horizontally to check this. ) The character also looks very unbalanced: it helps to imagine or draw the rest of the pose and make sure the feet are under her. I find that you could generally use a bit more shading in your faces. There is kind of an ambient blue light and that would have been cool to see in the hair. IT would have been nice to see a background too
That's very beautiful!!! The colouring and the clothing is amazing, I really like that~ The only thing I'm worried about is her body length, she is quite abnormally tall and thin, but I can understand if that's the style you were aiming for.