Recently I learned motion design with some tutorials on youtube, and I started to think “How can I use after-Effect to make my design sketches move?”. Motion sketches are quicker than 3D rendering + animations. It’s a good compromise to communicate simple intentions and movements in a small amount of time.
To do it, start with a quick storyboard of your idea. Then you have to think and organize your files before starting drawing. You need to separate mooving and static elements, group; tracing, colors, shadows, lights and flares layers in the same group to make it move later.