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Apply a thin coat -- about 1/4" thick -- of compound to the wall, using the flat edge of the joint knife. A thick coat might crack and would take a very long time to dry.
Experiment with creating various surface textures. Use a trowel with teeth to make ridges, aluminum foil to make peaks or a whiskbroom to create a striated surface. When the textured surface is complete, let the wall compound dry for about 24 hours.
Use a paintbrush to apply pale-pink semigloss paint to the wall. This warm undercoat will give the wall an aged look. Apply at least two coats to seal the surface of the drywall compound. Allow the paint to dry between coats.
Brush a liberal amount of glaze onto the wall with a wide paintbrush. Wipe off the excess with a cotton cloth, allowing glaze to collect in the crevices for an aged look. Glaze one small area at a time, but try to complete an entire wall before stopping, to prevent overlap marks.