Needs work
First off, some of the english in this movie is terrible. I have no idea what Mog is trying to say at the start of this movie, but it makes no fucking sense.
Graphics aren't anything special. You ripped and rotated. Whee. The sound is the saving grace here, and you at least stuck in some original work there, which is always a sign of effort. The plot is boring as hell, though. What the fuck was with Kefka laughing, and how did Edgar get him to shut up? That made no sense at all.
How could you make this better? Get a better plot, and try to work out some new animations. Oh, and make sure you credit the Final Fantasy team for the sprites next time.