Sand the tabletop until the finish is removed and it is smooth. Wipe away any sawdust with a damp rag.
Hammer areas of the table to make dents, use nails to make holes simulating woodworms.
Use a chain to beat the table and make dents in a shape different than the hammer dents.
Rub stain into all of the dents and holes to make the dents darker than the stain of the table. Use a small paintbrush to dab the stain into smaller dents and holes. Allow the stain to dry completely.
Stain the entire table in a wood stain one shade lighter than the stain you applied to the dents. Use a rag to apply the stain in a uniform fashion. Allow the stain to dry.
Use a sanding block to sand the edges and small areas on the table to simulate wear.
Apply varnish to the entire table to seal the finish. Allow the varnish to dry before using the table.
Paint the entire table in a finish you are happy with as this color will show through when finished. Allow the paint time to dry.
Rub paste wax over the entire table to give the paint a shine.
Rub a white candle over areas you want to distress. Rub the candle over dents, along edges and in any other areas that would show excess wear over time.
Paint the table with a second paint color; make this color complementary to the first coat. Allow the paint to dry.
Use sandpaper to rub in the areas you applied candle wax; the paint should come off easily.
Rub antique glaze over the entire table to give the paint a "dirty" appearance. Let the glaze dry.
Apply varnish to the table to seal the finish.