Stencil maps can help push your model to the next level by allowing you to layer materials exactly as you see fit. This tutorial by Jonathan Williamson,Â covers how to create a stencil map, applying it to your model in Blender and then using it to layer two different materials via the Material Nodes
Blender Stencil Map Tutorial
I hope you and your users enjoy. I am working to try and get more education out
about blender and appreciate the community support. Have a great new year and
talk more soon.