What my plan was with this animation was to track movement and emphasize it with shapes, colors, etc. I started by sketching out how I wanted the lines to flow, and then blurred them out a bit. I saved PSDs everyday on my desktop and edited every day. When I returned to the files to export a video of my progress, the desktop had reset, so the frames were no longer accessible to Photoshop. Here's the best I could get out of everything saved in my Drive folder: The original video and the final with only my drawing on top.