Here is a project that I put together from all the info I have on how to do stylized texture work for models using Substance Painter 2.
This method can be utilized for any 3d texture workflow and is easily modified to any style realism or stylized.
The sculpt was done in Zbrush. The game res and UV's are done in Maya,
The concept art for this is from David Harrington https://www.artstation.com/artwork/m1Nq1.
He has some fantastic art on his page.
It was so much fun using such a strong piece of concept to work off of.