How to make an antique sign. After painting the sign (full tutorial included), use a soft cloth to apply a dark brown furniture wax in a thin layer to entire surface of sign. The wax will settle in the imperfections in the wood, giving the sign an authentically aged look. Allow wax to dry for 3-5 minutes, then buff to a shine with a clean cloth.
How to make a Barn Wood effect. Start with new wood. Then with the paintbrush, paint a layer of water and then a layer of stain and rub it off quickly with a rag to get that gray color. The water keeps the stain from getting too far in the wood so it’ll be gray not black.