In any medium the goal in glazing is translucency. Approximately 1 part paint to 20 parts medium is mixed, then applied over a subject. The result is like looking through a piece of barely colored stained glass. You still see the subject clearly, it has only a blush of color. The mix can be much more translucent than what I will show you, meaning it can be a ratio of 1 part paint and 50 parts medium.
(Here, I'm using FolkArt's Floating Medium for craft acrylics. Golden has a glazing liquid that works wonderfully for regular acrylics. In my oil work, I use Liquin for oil paints. Use a medium suited to water for water based paints like acrylics and one suited for oils in oil based paints.)
Glazes must be allow to dry completely. After, subsequent glazes may be added allowing each layer to dry before adding another. My portraits have about 15 to 20 glazes. (For this demo, we will only do 3 glazes._ Glazing produces natural, translucent looking skin (on people or cherries) that can't be produced using opaque colors. Again, the point is to see through them.
I'm working in craft Acrylic here to demonstrate. The penny is to give an idea of the amounts. There is no need for precision whatsoever.
1. is pure paint in Apple Barrel's Bright Red. Below it is what I am using to glaze. It's FolkArt's Floating Medium. I've added a scant of black to the medium only so you can see it in the photo. It's perfectly colorless.
2. is how much medium and paint I'll mix. Just touching the tiniest dot of paint (1 part paint) to about 20 parts medium.
3 is what they look like mixed, and I've dragged the paint out to show that you can see through it.
|Creating a Glaze|
Colors: Apple Barrell Pumpkin Orange
Apple Barrell Bright Red
FolkArt True Burgundy
Using my flat brush or my angular I apply Orange first in the lightest areas. It's ok and sometimes desireable to go over whites with this. Later, if needed you can touch those pure white highlights back in. (As you can see, there is very, very little change in this painting in the first glaze. Each glaze builds color, and each allows us to see through to the light underneath. This is also used to be able to see through skin where veins are painted.) Allow this layer to dry completely. Depending on the humidity, Acrylics are dry in about 10-20 minutes.
The second glaze is done in the shadows in True Burgundy.