I decided to take a fairly straightforward, fundamental approach to the "whiteface": Titanium White and Lampblack. I added Payne's Grey, Zinc White, and Flake White to the palette; but these are for the final "tweaks", not for the foundation coat.
The trick is to work thin, and know when to go wet and when to go dry. The base white is applied wet, little more than a glaze. The shading is applied thinned and dry; and then carefully blended with an absolutely dry brush.
“When the cost of a hobby exceeds the fun and doesn't attract new people, the game is over.” -
Oscar Koveleski, August 2003