Need help to improve sprite

[MaGmaRinE]

It's hard to judge when the sprite is so zoomed, but it looks pretty good

To the animation itself, it looks like his arms are bouncing up and down. Could you fix that? :P

Thx and aren't the arms supposed to move up and down?
I didn't really know how to edit the breathing frames. So by logic, on the 2nd frame I moved the body and head upwards by one pixel assuming that the arms stay at their place, 3rd frame move the arms along, and 4th move the body and head back downwards while arms stay up by 1 pixel.

Maybe it's not the right way to do it, can you explain briefly what I should do please instead then?