for a first submittion. But there are a few things you could do better, in my opinion.
1. Make full use of your characters. You called this flash "Bucket and Flea" but the character who I am assuming is Bucket, really doesn't do much. Give him some lines, or, if you intended to keep him silent, make him a little more "animated" as a character (ironic? (^_^) )
2. Work on your sound. Your sound was solid, if not a little repetitive, don't be afraid to experiment with cool sounds. Keeping everything diverse is a good way to keep people interested.
Otherwise, great job on getting front page with a first submit! That is pretty impressive, I'm sure we'll all be looking forward to your next one.