you could generate this with code or you could simply composite images. either way, the result will depend entirely on how you combine your gradients/distancefields/however you choose to think of it here is an example in substance designer. the maths translate 1:1 to any shading language and can be easily ported to code.…
I think it is very hard to give feedback on this. Please show some concepts of what you want to do. 2D Concepts that covers the whole body. Then on top of that you need some photo references( to use when you work in ZBrush) of each individual item that the character wears (even if you go for a carton style). You will…