I'm assuming you already have some basic blender and 3d knowledge for this ;).

A quick and simple technick im using in my project to expand on textures, at the same time do it quick based on existing texture atlas i got for consistency in the art direction.

There is a different way i'm suing this for normal maps or individual textures on more complex props (furniture/environment objects) .
If anyone's interested i am creat many more video tutorials like this ;) more beginer or intermidient user friendly with or without audio description.

But for now check my game :> https://kruk2024.itch.io/experiment and tell me if you maybe would like a tutorial or some explanation on any aspect of it ?.