As many others have said, there's no sound; that's not a huge flaw in and of itself, but just watching a silent image move is a bit boring. The animation is also quite lazy, sadly; you have two scenes each with four different speeds, but the 'slow' animation moves at normal speed, 'fast' is the same animation as 'slow' but one-and-a-half times faster, and 'crazy' is twice as fast. There's no variety there... just the same expressions and the same motions over and over. This barely qualifies as a glorified GIF.
The only reason you're getting anything close to two stars is because A) you're using a franchise I love; and B) your artistry is good, but it lacks a great deal of effort.