Pretty good :D
Animation/Graphics - Not the best, but really not that bad at all. They could have used just a little bit of work. I'm not complaining though since I can't really come close to it.
Story/Content - Hmm, I don't really understand some of it. ^^ I loved the action so I guess that's really all that matters. I loved the fight with Mario that was really good. I loved the humor especially in the part where he pulls the turtle's head out of it's shell so it would get hit by the other turtle shell. Good stuff there. ^^The outtake scenes were pretty good. I think you should have made a lot more of those. They are always my favorites.
Audio - The audio used was good. The voices and sound effects were also fine. I think you should have added some simple Mario background music to the outtakes though.
Overall - Not the best in terms of animation and graphics, but it's generally a fun submission to watch.