Place a drop cloth in the area you want to paint, and set a mixing bowl on the drop cloth.
Add glaze to the flat paint by first considering what effect you want in the area. If you want a dark shade on the wall that is close to the paint color, add 3 parts paint to 1 part glaze in the mixing bowl. For a medium tone, use equal parts of the glaze and flat paint. To create a light shade with more of a translucent look, mix 3 parts glaze to only 1 part paint.
Mix the flat paint and the glaze together well by stirring it with a paint stick until it blends completely.