Thanks gorb and CPTdanielson .
danielson-sure bud. After doing all your shading and highlighting of your face. Take some guilliam blue glaze and dilute it even more. It should be so watered down that it should be transparent tinted water. Load your brush . Gently unload some on a napkin not too much, and and brush on with slight pressured hand . Each application should be dry before laying on your mext(this is of utmost important) it should take maybe round 10 or so passes before I stop at that point.