OMG, I ABSOLUTELY LOVED IT
Well, I personally enjoy all mushroom chase submissions in which Mario kicks the crap out of that stupid beetle. XD By the way, did you base that "retro world" idea on AlvinEarthworm's Super Mario Bros. Z Episode 7? I'm just assuming that you're a pretty big fan of his.
And I hope you win. This was one of my personal favorites. Be sure to check out JonBro's and Psycosis91's (he's the one who made the Thwomps movies)