Really bad.
The story doesn't really make any sense. It started funny, parking the spaceship on the disabled lot, the restaurant window text, but then it dropped into poor quality. The speech needs to be normalized, and is unclear. In many cases I have trouble determining what has been said.
The graphics are the ugliest of ugly, but it didn't look like as if much effort was put into this movie anyway. This is more of the type of movie where only your MSN pals would add a compliment to, in the shape of "very funny haha". But it wasn't so "haha" to me.
Assumably, your a beginner Flash user, but we all started from scratch. Summarized my advice would be; Script a story with an actual storyline. Pay better attention to specific graphics, specifically human behaviours. Also try to normalize the speech.
Good luck!