Some problems but it's still great :D
1st off, You dont have to resubmit if you accidently mess up your flash. Go to you options and re-upload it over where you had it before.
Great sprite work. I was kind of hoping you'd do something where you could jump into the background (where luigi was) and go back and forth adding a lot more to the game. overall it was good but when I landed on enemies and it just instantly popped me up, it felt a little awkward. good job. If you make it longer i'd say its front page material. :D