I agree with grundig said. Try adding transitions it would make your movie smooth.
There is an Alpha section on Newgrounds for the purpose of feedback. Incomplete or practice flash is likely to get blammed. Animation was not bad. Try adding transitions to your backgrounds instead of just cutting from scene to scene. Also, sound effects other than music would add to it, in my opinion. Bonus for Finn and Jake.
Not a finished piece of work I suppose, but not bad either. I can appreciate up and coming animator practice runs. The background music reminds me of one time I played guitar into audacity and the mic kept on warping the sound automatically. Fancy that. Anyhow, I think the concept peeks it's head out to be interesting. The animation themselves need a little work as they're a tiny bit choppy and whatnot but as is a practice run. Keep improving. I like the idea of seeing a completed polished product some day soon. Until then, keep working hard and fine tuning.