Firstly, I love the texture you added to the background^w^ It shows the light and dark features of the car which shows it is close and coming toward Snowfur. I think there would need to be more tree's since it's close to a forest and keeping them closer together would show that. A suggestion would be to keep a few close and others far away to show that it's a forest as well<3 The posture is right except the one leg on Bluestar:3 I'd suggest to thin it out a bit. The one thing I love is the expressions<3 They are exactly how you'd draw them for this scene. For the pose of Snowfur I'd look at cat photo's for that^^ It really helps since I've done that as well:3 Overall I really like it:33 It is very good for Paint.
Sorry if I was a bit harsh;v; I don't mean to be<3333