Method
I used SAI to paint every frame to see the different results from different changing forms of Polygons. After that, I put them into TV-paint to make them move fluently.
Context
RWBY black trailer
https://www.youtube.com/watch?v=ImKCt7BD4U4
Response:
This is an short gif about the character(a planet) having some explosion events. I combined every layer of the storyboard to find out the pattern of motion in these events, which was inspired by the short animation played in class.