3D STUDIES IN ADOBE ILLUSTRATOR - AI 3D

I'm learning stuff on some tutorials I find in the web, like so:

Began by creating patterns, such as these purple stripes, then I learnd how to apply the collor palletes I made just for this on said stripes.
Last I created 3D shapes in Illustrator and covered them with the patterns, rotate the shapes to give it better perspectives and pronto!