Put on a face mask and protective eyewear.
Wrap a piece of fine-grit sandpaper over a sanding block and sand the "peaks" of the furniture item or other object. Sand the edges, corners and the regions around handles to simulate wear. Remove the paint in some regions and thin the paint in other regions for a random appearance.
Chip off areas of finish or paint by scraping and lightly gouging the surface with a flat-head screwdriver. Chipped paint is most commonly found around latches, handles and other regions that are handled frequently.
Dampen a lint-free cloth and wipe down the item's surface to remove flecks of paint and dust from sanding.
Place the item on a drop cloth.
Apply a coat of clear polyurethane or paint to seal the object's surface, particularly in the areas where the finish or paint has been sanded or chipped away. Use a paintbrush to apply two even coats. Let the finish dry before handling.