Try covering up the bottom of the image and look only at his head and shoulders. You should be able to notice a fairly significant limp
. (His body goes up more when he's standing on his right leg than when he's on his left leg. Also, I think the way he raises his shoulder is a bit catwalk-y; in fact, his whole right arm is a bit prancing in those forward frames.)
And when the right hand is forward (where it seems to hover for a long time), you've given it a very exaggerated turn inwards while closing his fingers, which makes it seem like he's giving a secret hand sign. (Curling his fingers and thumb in some frames looks weird in general.) His arm gets way short in these frames as well.
If you look at the far back of his hand movement, you'll see that his left hand is turned with the palm backwards in that position, while his right hand has the palm turned forwards. Either is possible, I guess (though personally I think palm in towards the body is more natural), but I think you should be consistent.
It's a nice drawing, and apart from the things mentioned it maintains good continuity on the limbs and volume between frames. How all the little details get deformed as they move looks very convincing, and almost looks as if it was rotoscoped or drawn from reference.