The oil color palette is pretty simple, titanium white, raw sienna, cadmium red and a pre mixed Caucasian flesh mix.
I find that less is a LOT better than more with oils.
Start with the darkest shadows and then build up to the highlights and blend, blend blend with a CLEAN pointed brush. Its not voodoo, or magic. Get an optivisor, sit down and just lay on some color.
Look in the mirror, copy a photo, anything that you might find inspiration in or a guide. I finish off with a quick spray of dull-coat lacquer. The last pics are a little shiny, I still need to finish that step
Enough blather- pictures!