Considering this is your first...
I gotta say it's an excellent flash. Smooth, with simple animation. Thats what alot of people like. Also try to flesh out the characters, if possible. You could have a real hit on your hands if it was Longer, Some Kind of Plot, and of course make it random put not just plain out of whack. But of course your experience will grow and hopefully you'll find more constructive ideas in your think tank. Excellent start!