Taylored Expressions has a very helpful charts for those want to use Copic markers for coloring different hair colors and skin tones, there is even a blank sheet for practicing. Download them here. (note: you’ll need to “check out” but they are free)
-Heather
Finding the right marker for colouring skin can be exceptionally hard, with 36 different skin color shades, these skin-toned markers by Arteza make it so much easier. Check them out.
Bummer. The blank sheets are no longer available. They look just like what I was looking for.
Sorry- This post was from 8 years ago so the site has probably just removed them since then.