Not bad.
^^Good Points^^
One thing I liked about this movie was the character designs. They looked pretty cute, and were simple yet still didn't look like crap. The animations were pretty good as well, and the music went pretty well with the storyline of the flash, which was also pretty good.
^^Needs Improving^^
This could be a little longer seeing how it went way too quickly, and I had to watch it a few times to completely understand what happened.