A material creation tutorial by Emre Karabacak with all the project files.
In the end you’ll be importing the resulting texture maps into Marmoset Toolbag and using the result as an Unreal Engine 4 PBR shader.
The first part of the tutorial is about setting up the material in Substance Designer:
The second one will tell you how to create a new shader in Marmoset Toolbag:
Via Cubebrush