I just can't tell you how much I love your style. So much so that when I saw these "process" photos, it hit me that you had a process. Not kidding, I kind of thought you were magic. Your grasp of the planes of the face is something I can see in my mind but can't reproduce. Props. Just props.
WOW ...i love the texture and the volumen ...
What colors are typically on your palette? and What size brushes do you use?
For portraits, I use mostly earth tones, olive green, raw umber, burnt umber, alizarin crimson, burnt sienna, mars yellow, and I add to that any colors I might need depending on the circumstance. Brushes depend on the size of the area I'm painting but I usually end up using something about 1/2 inch, 3/4 inch and maybe a 1 1/2 inch or so.
i SECOND THAT QUESTION!