Hehee that was enjoyable :D Whatever editing you did, I'm glad you got it down to EXACTLY 6:00!!! :O!!
Anyway, besides the physics defying issue I brought up earlier, I think you've adapted the script well to this condensed version, and the story was fun to follow. However, there was a moment around 2:00 where the voices sounded a little too alike. Otherwise, I think you displayed a good range from the high lady to the gravelly cockroach and then dopey Bob's voice.
A few mixing issues, there's some static toward the end before Mal discovers what Timmy's wish is, so you might want to tweak the noise removal there. I would have liked to hear a little more ambient sound effects, like maybe owls to set the scene? I really like that crow, though. Also I thought the transformation sound effects were too whooshy whereas I'd have preferred them...poppy. Music choice was great, too. Added to the scene, wasn't distracting, good volume level.
I think you stand a good chance in this competition! :D Good luck!