Well...
It needs more work. It starts our promising and then it gets kind of draggy. The music is a good choice, the animation was pretty decent, but, you made some things last to long, like Amy's running. It went nowhere fast and the fight with the four goons was too short as well as not much of a confrontation with Mephiles and the mario background was squished in way to much. So my suggestion is, add a bit more action, some flashy lights so to speak not literally, and explain more of the story in it by adding some headlines through out it or portray it with the movements of your characters. Also, increase the FPS to at least 20 to start with and work your way up to at least 24, that's what I use. Keep at it bro and I'm here should you need further assistance.
God Bless
Shade