Hey balls glad you are working on a complex piece like this. It's looking quite good!
I think some things could be improved though:
- Her right shoulder is way too big. Her left one looks a little small, but it works if you reduce the size of the right one
- Her hips are too short. The pelvis will take up more room then you currently have
- The neck seems to be too far to the right
- Her back leg doesn't seem to support her
Here is my edit, where I tried to address these issues:
I'm still not totally happy with her right shoulder in my edit, but I'm sure you can figure it out. Also, I must say good job on the shading, looks mostly correct to me.