Here are the steps I do to achieve the dark skinned figures alot of you know me for.
I use 6 colors of oils. 3 of the colors are my base coat I apply over Humbrol #121. The base mix is:
20% Burnt Sienna
40% Yellow Ochre ( yellow will determine depth of darkness of skin )
40% Raw Umber
The above are mixed and applied to all flesh areas.
I use a 3-ring notebook clear page protector as my palette and have inserted my formula for flesh into the protector. After finishing, I take my paint rag, already wet with thinner, and clean the paint off. Back into the notebook where I keep other pages with different formulas until the next figure.
After applying the base mix I take a clean flat dry brush and wipe off the base leaving the Humbrol #121 undercoat to lightly show through. The oil base mix will stay into the eye creases, mouth area, and any recessed area and just the highlighted areas will show with Humbrol. After removing the oil mix I apply yellow oil paint to the areas where the humbrol is showing through (highlighted areas. I let the yellow stay on the flesh area for 1 hour, then blend gently into the base mix.
Now I apply Titanium white to the same areas I applied yellow and again let it sit for an hour before blending into the flesh.
I now take Cadium Red and apply a dot of paint to each cheek and a small dot to the center of the top lip. I then blend this carefully out into the flesh area ( a little red goes a long way )
Red Added
! GREAT JOB on the figure so far 
