Based on the a simple rotating star or flower shape, I made a succession of animated gifs, that vary in complexity – they show what you can create working with shapes and a few effects.
1. The basic 60º rotation of 1 layer– simple and seamless
2. Alternative layers rotating opposite ways– the layers have a screen blend mode
3. Layers rotating the same direction, but at different speeds– the lower the layer the faster
4. Each layer has 2 repeater effects added to it– the layers rotate at -120, -60, 0, 60, 120
5. Added glow effect and a pucker and bloat effect to each layer– the pucker and bloat is animated
6. Playing with the twist effect– feels like a jellyfish or octopus :)
This is one that I pasted from Giphy: