Really like your art style. The neck seems a bit too stiff to me. I think giving it a bit more of a springy bounce would really push the liveliness. The way the head bounces back to the front, doesn't seem to be reacting to anything, just arbitrarily shifting back to the front. I think having it be more of a secondary motion from the main body's movement would help. I like the way the feet are animated a lot. Not to be too overly critical, just some observations.