I have been learning to use milk paint for portraiture. I use the anti-foaming agent (handy with a beer glaze, but really for all mixing!) and the clear Milk Paint base made by the Real Milk Paint company. The rest is mostly experiment! I love the freedom to mix oil, water, alcohol, etc. and quick-drying results milk paint gives. Some notes on working with milk paint for fine art painting are found on my website at: http://richmullins.candletothesun.com/portrait-of-rich-mullins.html.
tavern signs made with milk paint