Octopus Tentacles Material study

These are several renderings of the procedural material of Octopus Tentacles created by me from the tutorial by Eric Wiley.
It was a very interesting experience because all the material was made 100% in Substance Designer. In the final, I received a "conditional sculpt" of 1 tentacle using a heightmap that can be rotated around its own axis, wow!

Thank's a lot to Eric for such detailed and interesting lessons!)
Here you can look at the tutorial and fantastic materials that he created:
https://www.artstation.com/artwork/6aOv1N