All credit to Bobersaur for the paint scheme.

Refer to video tutorial for steps.

1. Prime with Army Painter Grey
2. Base with thin layer of Flat Flesh and a small mix of Abaddon Black
3. 2nd base coat with thin layer of Flat Flesh and small drop of White for desaturated look
4. Wash with a mix of Druchii Violet , a small drop of Flat Red and water
5. Wash darker sections of skin with Druchii Violet
6. Wash darkest sections of skin with Druchii Violet and small drop of Abaddon Black
7. Highlight with Flat Flesh and small drop of Abaddon Black :
8. Highlight with Flat Flesh