I Cant Paint Rocks

I'm working on this painting for Mythology class and I think it's pretty clear that I dont know what I'm doing...



This is nowhere near finished. I'd like to make the rocks fit with the rest of the painting better but I don't know how to get them to do so. I also need to paint her hair, some mist rolling out of the cave and the ground. I'd like to get some moonlight on the rocks and the pig. Lol, I have a lot to do.