NPR toon shader

[Marmalade Boy]

Hi all,

I am working on building a "grungy" dirty type toon skin shader and I think I have it where I want it. However, I can't figure out how to make the contour lines wavy/squiggly.This post (https://www.keyshot.com/forum/index.php?topic=13383.msg66400#msg66400) mentions using " Noise texture with Color to Number node to drive Contour Width" but it's not working for me. Does anyone have any suggestions? I intend to use this on some Daz figures. Below are some examples of the shader I built and the contour lines I wish to add the variations.