It was ok.
Well beacuse its your first flash, its great. But you should have zoomed into luigi cuz he is the main character, i barely saw him. Sound effects were 'm kay, good job with em. You should have put more jokes, a good flash never is made in 3-4 days or something. At least by what i saw
And guys, dont be harsh on him, its his first sprite movie. Good luck on improving! ;)