I really love the motion of the lower half of the body! The only thing that bothers me is the way the head suddenly jolts to the sides and the shoulder jumps up on the extreme frames. I wouldn't make the motion less extreme, I'd just make the in between frames tween the motion better.
Instead of
shoulders: square, square, square, left, square, square, square, right, ...
head: straight, straight, straight, left, straight, straight, straight, right, ...
I'd make it*
shoulders: leaning right, square, leaning left, left, leaning left, square, leaning right, right, ...
head: turning right, straight, turning left, left, turning left, straight, turning right, right, ...
Does that make sense?
*If I had any sort of artistic ability.
Instead of
shoulders: square, square, square, left, square, square, square, right, ...
head: straight, straight, straight, left, straight, straight, straight, right, ...
I'd make it*
shoulders: leaning right, square, leaning left, left, leaning left, square, leaning right, right, ...
head: turning right, straight, turning left, left, turning left, straight, turning right, right, ...
Does that make sense?
*If I had any sort of artistic ability.