Firstly, flat black primer drybrushed with flat white to pick out the highlights. Next, pick out the contrast areas using reds, blues, yellows, purples, whites, grey, green etc. All this is doing is providing an interesting undertone and forcing colour into an otherwise dull painted face, this is the process known as sketching. Next we layer with a variety of extremely thin washes of various skin tones i usually start with a dark skin tone wash, then work up to a base flesh colour always adding thin detailing as I go to replace shadows and highlights. Once this overall effect is complete and you are happy with the coverage, put away the water and replace with glaze medium to mix with the acrylics. Now is a good time to protect your hard work by adding a layer of matte varnish. From now on, the technique is exactly the same as everyone else’s out there, slowly layer the highlights with ever increasing lighter tones until happy with the effect. Glaze medium will give a few more seconds to blend, and if required a very slight satin finish to the face if required. So there it is in a nutshell, I’ve no idea why this creates such interest, as it’s a really simple technique to use, good luck with it.