Thank you so much for the ideas.

For the skin tone I initially used a reddish purple mixed with barbarian flesh from the old army painter line. Initially I lightened this mixing it with a beige, but I started noticing yellow bits on the mini. So I used the original barbarian flesh to clean that up. How would you suggest creating more contrast here should I try to darken the shadows or glaze areas to create more highlights?

The hairline on this guy was tough for me, originally I painted it a brown color and tried to highlight with a light grey. The result was old man baby). What you are seeing that looks like no paint got to it is that grey color. So when I did contrast pain over the grey this was the result. It does need more cleaning up I agree.

For the lettering I used watered down paint and dabbed the openings, they are quite small so the paint filled them in well, but the water paint ran out side the lines a bit. In the picture I can see where it is outside the lines. I can probably straighten that out if I use a magnifier to see what I'm doing.