Quick recipe (my simplified version) for 'How to paint faces on a miniature. Light skin tones' by Games Workshop Miniatures Designer and former 'Eavy Metal figure painter Darren Latham.
  -   Chaos Black  
 - 2-4 layers of thin   Bugman's Glow  
 - 50/50   Bugman's Glow  &   Cadian Fleshtone  over all but the most recessed areas.
 - Watered down   Tuskgor Fur  into recessed areas.
 - Watered down   Doombull Brown  into recessed areas.
 -   Cadian Fleshtone  highlight all rased areas.
 - 50/50   Cadian Fleshtone  &   Kislev Flesh  : 
 -   Kislev Flesh  on highest details, nose, ears and eyebrows
 -   Pallid Wych Flesh  eyes
 - Pupil, anything dark, I mixed   Abaddon Black  into the remaining   Pallid Wych Flesh  for a very dark grey.
 - Watered down   Tuskgor Fur  around the whites of the eyes to clean them up, 2-3 washes may be needed.
 - Entire head given a single wash of   Reikland Fleshshade  
 - clean up around joins
 -   Nuln Oil  in mouth if open, and all around joins to black areas.