The angles of hands to knees isn't equal on both sides, looks like he's rubbing his crotch with the forearm - I'll update with the left leg (his right) in a tweaked position.

there's no way his arm could fit between his legs there, there's just a paper-thin area that a bulky forearm is occupying

Reworked the palette to a much more colorful one and cleaned up several parts of the animation where a few pixels here and there were niggling at me -chiefly his back and more visible fist. Glad I put that extra few hours in. It would have been a LOT faster but trying to change the palette and getting it to save with the new one was a nightmare. I was using Pixen and had over 10 crashes as I saved my repaletted work, ended up reworking it in Fireworks.

I'm not totally cool with my palette, tried a few alternates but wasn't feeling it, when I redo his hand I'll make a move at reworking the palettes too. Thanks for the feedback! Capcom quality however is still going to be out of my grasp for a while yet!

 I think that the lineart is mostly good, but the palette might need some work if you want it to be Capcom quality.

It's ok at this point, though

He's supposed to be tensing up while he's inhaling, I think I'll fix his left hand (on the right) so it clenches properly to show this. Hmm now I'm wondering if tensing up on the exhale would be better.. Want to keep him looking pumped and ready for action.

 I don't think his shoulders should grow when he inhales.  Otherwise, awesome.