Tape any moldings or window and door frames with painter's tape to prevent paint splatters. Place a drop cloth on the floor to protect floors from paint.
Pour the darker shade of paint into a paint tray, and roll onto the entire wall with your paint roller. Wait for it to dry according to the manufacturer's instructions.
Mix together three parts of your latex glazing medium and one part of the lighter-color paint in a large bucket. Stir with a paint stirrer. Pour some of the mixture into a clean paint tray.
Roll the glaze and paint mixture with a clean paint roller vertically up and down your wall in strips. Do not overlap the strips. Roll three strips and have your assistant drag the linen-technique brush straight down the wall firmly. Wipe the brush with a rag after your assistant completes one drag.
Roll strips of the glaze and paint mixture as your assistant drags the linen-technique brush down each section of wall you rolled. Do not overlap the brushing.
Drag the linen-technique brush horizontally across the wall once you have completed the wall with vertical drags. Drag evenly and level across, and wipe the brush after each horizontal drag. Allow the wall to dry completely for 24 hours.