This is the Zbrush sculpting, I worked using layers and extracting the displacement from the highest so I could then take it to Arnold and have a very detailed model while using the low poly version

Wireframe

I decided to texture using polypaint, I felt more comfortable and in control and it allowed me to use all the sculpted detail to max

I also tested some material and lightings to find the look and feel I envisioned, I wanted to have a clear difference in the tentacles and the body without having them feel too dry or too wet

This is how the model was looking, I did some renders with a white and clear background to have a clean look of the model and then decided to make a little environment like the ones used for minis to make it fell a little alive and grounded