I made a 100% Procedural Scales Shader for PBR Texture Creation
These are the material studies I made to show it off.
You can get the file here: https://gum.co/sneks
The snake shaders are included as examples.
Green Tree Python
Yellow Viper
Blood Red Corn Snake
Python Clay
Viper Clay
Corn Snake Clay
Close-Up Blood Red Corn Snake
Real-Time Renderings in Eevee
Example Shaders: Generic/Blood Red Corn Snake/Yellow Viper/Green Tree Python
Quick study of fully procedural aging roof tiles using the same base texture