I enjoyed the link and the articles. Personally, I still use flesh tone painting that I learned from a couple of books by Francois Verlinden. I use Humbrol enamels for the base colors and then Winsor and Newton oils to bring out the flesh tones. Anyway, it works well for me.
As far as the tools and brushes go, I use a #1 or #2 brush for the base coats and then a 0 or 000 for the oil paints application. I use a #2 for blending the oil paints. For the eyes, I have a 25/0 and a 20/0 that work well for me. I usually paint the eyes last and start with the "whites" where I use white paint toned down with some blue, then comes the iris and finally the pupils. I will sometimes use a 005 drafting pen for the pupil as you can get a very precise dot with them. I have also had success using them for the iris.
Experiment and see what works best for you.
Bull