I think the head holds for one frame too long, maybe give it one more frame on the way up, just a pixel before it hits the top. Also maybe try moving the left eye a bit further to the right so it's not so close to his right.
Very cool indeed, but there's something weird with the head... is it something I'm missing or you could use as many frames in the head animation as there is in the body, but with the same delay ?
thanks for comment, this pixel is a old one, i don't understand everything you say, but there is just one eye here, the right one. the blue in the middle is the pupil.