This is the color chart I created I guess I should have zoomed in a little but you get the idea. I went ahead and colored in the boxes with skin combos that I use. This is a 6x8 so I can put it into my copic binder that I have created/work in progress.
In this image I am trying for a darker/Hawaiian skin tone. Also wanted to show the importance of shading around body parts (the nose and lips). I have arrows to indicate my light source (upper left). I am actually excited about finishing her because I am very happy with how her skin is coming along. Maybe I'll show a finished card some day soon. That's all for now, keep it colorful!!