meh
the good:
you had some funny scenes in this. for example when mario lay down and that cow came falling from the sky. i liked the idea with that "*pause* 'explanation' *unpause*".
the voice acting was all right, too.
the bad:
the sprites were poorly cut out. one can still see the blue backgrounds!
the rest of the graphics were terrible, too.
and the story made no sense at all.
the ugly:
keep practising. maybe read a few tutorials concering sprites and how to cut them out properly.
and try to animate your movies better. tweening is not the way to let a character walk from the left side of the screen to the right side...