Here I will link tutorials I found were super useful. I’m also linking it here as they can be easily forgotten so I know have somewhere easy I can go to look them up again.
A tutorial on if you are using procedural textures and want to make them high frequency, this shows you a method to make the tiles not be so visible
This shows how to make accurate displacements using mudbox or zbrush using float data. Has really good explanations.
Blending normal maps in photoshop
This link shows a way to hollow out your mesh for 3D print potentially saving up to 90% of the material. You’ll need to download two software to follow this tutorial but both are free.