Hello, for the last weeks I've been slowly trying to create simple pixelart characters that I can use in my game. Finally yesterday I created this Alien character and animated him in a way that can be use in an early build of my game. Can you tell me how to improve the animation? It is a little choppy right now seeing that it is only 6 frames but that is ok for now. My main problem is with the shading, I know something can be done but I couldn't figure it out, and lastly I don't like the arm movement and couldn't find a good solution for it. You can edit my sprites if you want to show me the improvements.

Yes, the left and right walking animations are mirrored, I still haven't decided on a workflow so I didn't want to draw everything from the beginning to make the other side of the walking animation.