Four heads are better than one

Silly me... Even after sorting out what layers I need and where about they should sit, I still mis-read my own notes. Faces where closest to the body, so they needed to be done first. I think 4 (times 4 different skin tones) should be fine for one pose.

Also after thinking about it some more, there are some additional layers I've missed (Facial hair, socks/stockings, tattoos). Possibly more.