The first two images are from yesterday and are very rough, so you can see how I'm going about it. I started with using pompeian red in my darker side of the face because that is the color I saw coming through the shadows in most of that side of the face. I know it looks very red and disasturous - but trust me!
On the light side of the face I am first layering light flesh which is often the color I use for the first coat.
Day 2 working on this is below. & look how much more natural the colors are looking already. & you doubted that red, didn't you? The big surprise colors during this phase was touches of raw umber in the dark side. It seems like an icky color for flesh tones, but there's a bit of green in it which suitably knocks back that pompeian red. I don't want to knock back all the red in the dark side - just in some places.
the surprise color on the light side is cold grey 1 which could be considered a very light blue. SHe was lit from the window on a very cold winter day, so I think that is why it was needed.
The face is not finished yet so don't worry about some strange areas at the moment.