David:
I usually mean glazing the entire background as an example. I have done this on the portrait I have in the critiques forum and it is just amazing how it all seems to tie together a little more after it is done. In certain portraits, I have run a glaze over the entire painting - including the subject because it needed it. That unifying glaze is usually among the last thing I do.
As for mediums, I use several, but primarily Galkyd or Liquin on the undertone, and a mixed medium for the color stages. The mixed medium contains Damar, Rectified Turps, Stand Oil, Venice Turp, and a couple of drops of dryer. It is a nice medium for spraying and painting into, and for glazing.
|