lets go with this. Pretend you were the one doing your motions ok? Like for instance that hilarious looking kick. would you jerk around like that during the action or would you kick like a normal person? Think of it that way when aligning motions.
"Would a normal person look like this when attacking assuming they had these powers or w/e"
if yes this motion is correct
if no I need to fix this.
what I said also applies to sprites in general if the motion looks natural then its fine if it looks all weird and jerky "aka ALL of your Sprite animating" then it needs a massive fix.
as for my take on this and a few others I have shown all of these motions look absolutely ridiculous and hilarious you have turned Shredder into a laughing stalk. You have a talent for spriting SINGLE sprites but when you animate them it comes out looking REALLY bad.