Too long
sprite movies are usually made for score. if you made it for score, why so long? and why not put all the good stuff in the beginning? that thing was like 10 scenes! anyways. make the animation flow. by that i mean always have something moving. children are like a tyrannosaurus and will stop watching something if it stops moving. myself included...
most people voted on this flash in the first 5-20 seconds or so.