Hey! I really like this painting, it has a nice vibe to it 
I would suggest to add more texture to the rocks in the middle and background. 
Further I would think that you could color the scene more. In the whole piece is a kind of red undertone mixed with blue. I would think you could make her stand out more by taking out the red from the surroundings and making the cave cooler and her warmer. A bit more form to the head by adding some more shadows. And the ground beneath her is VERY reflective and demanding attention. Squint your eyes and look at the focal point. There are a lot of equally bright surfaces. Maybe dialing some of them down would help. The butterfly is a light source, but there is light coming from an opening in the upper right corner, head and ground are reflecting almost all of the light that hits them. So they are conflicting in my opinion. I think you should make a decision in that area.
Otherwise it's a nice piece so far, I really like it! Hope my critique helps you
