What was your theme?
I thought this clip had just the right length time - not too short, not too long. This must have taken a big chunk out of your time to do. I give you props for actually being able to accomplish such a task (and a good one too). Music was ok but really wasn't my taste.
There are a couple of 'standards' you should do to help improve your flash.
1. Preloader - some people aren't able to download and watch right away. They will need to know how long it will take to load the thing. If its load as you go style, those same people won't enjoy waiting every 10 seconds.
2. Play/Replay button - Some people (like myself) love to multitask. Having the flash just to suddenly start may surprise some people. If for some reason they want to see it again, add a replay button. It tells us when its done. I personally don't like when it loops and you don't know when it has ended or began.
3. Features - We LOVE to know more about you and your flash, so go ahead and add it. Why did you make this? How long did it take? How many sheets of paper did you use? What is the flash about? Features always put a smile on my face.
4. Credits - Ok so you did put credits at the end, but you could have made them a hair longer. Throw in some of your other artwork in the background too. I would have loved to see that Tot figure you have on your site right there at the end.
I'm not dissing your work, but I'd figure I would give you some suggestions. Otherwise, I enjoyed watching your film.