You fixed it :D  I meant the lines on his arm

I think I fixed it, not quite sure what you mean by lines.

Not sure why this hasn't been accepted yet, I like it.

(His) left arm, the lines change too much and it looks like the lines get longer.

There isn't much change on the skin as it is though. The only change there is is on the chest and that's only to show that he's breathing. What do you suggest I change specifically?

Nice colors, but too much change on the skin throughout the frames IMO.