This portrait is supposed to depict a priestess of Sekhmet, the Egyptian lion goddess of war. Or rather, how a priestess of Sekhmet might look back in prehistoric times when the Egyptians were still nomads roaming the then-grassy plains of the Sahara. I’ve always thought Egypt’s prehistoric (or Neolithic) period most fascinating of all, probably because I’m a sucker for prehistoric and tribal stuff in general.
The hairy headdress this priestess is wearing was modeled after the lion-mane headdresses worn by Maasai warriors in modern Kenya. As for the red face paint, it is supposed to reference a tradition about Sekhmet drinking blood (or rather beer dyed red like blood to get her drunk and pacified).