Sand the surface of the wall with fine-grit sandpaper to prepare the surface for paint.
Apply a coat of the lighter color paint for the base wood tone of the wood finish treatment using a paint roller. Allow the finish to dry for at least four hours.
Brush on a very light coat of the darker color paint for the wood grain onto the wall using a paintbrush. Drag cheesecloth down the wall from ceiling to floor to streak the paint down the wall.
Start at the top of the wall and work downward using the faux wood grain tool to create the wood grain pattern on the wall while the second coat of paint is still wet. Rock the faux wood grain tool in a downward motion to evenly create the wood grain pattern.
Touch up any small areas as needed along the top or bottom of the wall and around casing with an angled sash brush, using the lighter base paint. Allow the paint to dry for 72 hours before placing anything against the wall.