I need some feedback for my spritesheet

[AkumaTh]

It still the arms. I've animated your Shyguy sprites and mine so you can see the issue.

 Vs 

Your pixels remain the same, but simply switch places. That makes it seem like they're dancing than moving forward. My version have the pixels looking different trying to give the illusion that the arms are in different positions. I definitely could have improved it by moving a few pixels but the idea is there. A better look is this.