I'm no expert on Flash and all,but here's my views on this piece of work.
First of all, this animation contains a grand vision of Twilight Sparkle, now an Alicorn, using her new-found powers to get out there and save the world from certain destruction. The determination and excitement her facial expression implies that she's ready to put her wings to the test and ready for some action. Music choice is great, fits perfectly with all the action that is going on in the animation and therefore further intensifies the excitement if the audience.
Secondly, I can safely say that I have not seen anything quite like this,either in context or in style. Other people might have gad this idea, but you are probably the first person to actually do it. Therefore, full marks for Originality.
Lastly, I only wished that the animation was a bit smoother but considering the amount of hardwork and patience needed for flash animations, the fact that only a few parts are affected and that this minor flaw can be easily overlooked because of the strong impact,as mentioned in my first paragraph, I gave a relatively high mark for Techniques.
Overall, I applaud you for a job well done. You've earned it.