This is awesome, I must say, Moon! xD
There's only just a few mistakes I wanted to point out.
I love the expressions, But the structure of the face is just a circle. Try curving the face in with the snout a little, To fix it.
The anatomy is better then I could do at your stage of digital drawing, but there it one thing I've got to point out. The stomach is the same level as the chest. Try curving the stomach in or out, so it almost meets the bottom line of the tail. Not do it just ends at her hinds.
Other then that, I think this is great! keep up the good work!