Fill any holes or cracks in the walls with filler, allow to set and sand smooth.
Mask off the edges of the walls, the ceiling and skirting boards with masking tape and cover the floor and furniture with dust sheets.
Paint the edges of the wall with a white satin finish paint, using a brush. Apply the rest of the base coat with a roller for a smooth, even finish.
Obtain two shades of the same color of paint. One will be the primary hue -- such as a light tan, rich cream or soft gold color -- and a second hue should be either lighter or slightly darker. Warm earth tones best create the look of old parchment.
Combine one part paint, one part water and one part untinted glaze in a bowl and mix. In a separate bowl, mix the same combination using the second paint color.
Work across the wall in small sections, starting in the top corner. Take two paint brushes, one for each mixture, and apply the two colors to the wall in squiggly lines, approximately 12 inches long and 6 inches apart.
Rub the cloth over the lines in small circular motions to blend the lines into the wall and combine the colors together. If you notice stark white patches, apply a little of the glaze to the cloth and rub over the white area. The color shouldn't be even; there should be light, medium and dark patches.
Move on to the next section of the wall and continue until the whole wall is covered. Remove the masking tape and repeat the process on the next wall.