Hrm... it shows potential...
but it's still very unpolished. :( You have explosions that don't fit, sprites and backgrounds that jump and wiggle unnecessarily, and the voiceovers needed some editing. But I think you can turn this into something good if you work at it.
Also, there isn't much of a story yet. You barely had any content at all in here. What I don't understand is why, for so little movie, it's over 5 megabytes? o_0 Maybe that flash editor you use doesn't compress things correctly. Oh, and that's another thing. It places a watermarked text line at the top that overwrites some of the dialogue boxes in your movie. You might want to think about switching to Macromedia Flash instead. :(
All in all, it's got potential, but I really don't think it's ready yet.