As you can see by the shader panel screenshot, this is a very intuitive shader, just a couple of things to keep in mind.

- this is not properly a PBR material, there's in fact a "fake depth" parameter that you can use to add what can be called a sort of ambient occlusion.

- Darker variants: you can use this feature to add darker variants of the base color on the cloth surface, these variants can be scaled on two axys, my advice is to stretch them along the long side of the object.