And, here's a render of that above-mentioned character - "Heather" - using that shader:

One disadvantage to this shader that I haven't figured out how to get around is: the colours and such don't output to the preview window. That's okay by me - I can always do  quick 30-sec render to check my work, but some people might find that a show-stopper.

Just looking at this render: looks like I might have to tweak the eye-shadow mask 2 a wee bit... I did two layers of colour because I just wasn't getting the colour depth I wanted, so yes, I kludged it. Two layers created the effect I wanted. Obviously I'm still unclear on some aspect of the Blender node. Or perhaps it was the way light fell on the eyelid that gave the impression it wasn't being shaded to the degree I was hoping for.
Besides the eyeshadow mask, need to redo the brows. Going to allow slight colour variation there, so the brows can match the hair.
And the bump seems to be going into the skin, not out. Maybe bring the bump down a titch, too...
Details, details.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks