I like the fact your using frame by frame animation here, please keep that up
Aside from art cleanup and maybe adding a few more inbetweens to smooth things out, the only thing that really nagged at me was the fade transitions, its a bit too slow and kills the pacing if you ask me. For something that looks like its trying to be a Hanna Barbara whacky comedy, fade transitions should only be used when transitioning the viewer either to a fake commercial break or signifying a significant portion of time being passed. If my memory serves, everything else in a HB cartoon was jump cuts
Keep it up man! Cheers :)