snuggle sketch progress - help?

I'm close to done with the sketch I've posted process pictures of, and I want to be damn sure of the anatomy before I start playing with digital coloring/shading processes*. Any and all feedback is welcome!

Even something as vague as "something bothers me about the left arm" can be really helpful, so don't be shy just because you're not an art/drawing person.

( critique, please! )