Textures like "The Wolf Among us"

Hello everyone!
I would like to know from you how to achieve this level of detail (like the folds on the clothes)

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I tried with polypainting softwares like Zbrush and mudbox, but it’s impossible to achieve this level of detail. Do you know how to do this? or is it a particolar shader?

thanks in advance!

Likely a combination of outlines (including overlapping and smoothing group outlines) and lines drawn as part of the texture.