Measure the mouth of your vase and draw a template of the opening. Cut out the template and fit it inside the mouth to ensure that you measured appropriately. The template should fit snugly just below the inside of the vase’s rim.
Transfer your template onto a section of plywood, and cut out the section using the jigsaw. Paint your plywood piece to match your vase; you can skip this step, but it will make the piece less obvious in very widemouthed vases. If you want, you can also paint the chandelier canopy to match the plywood piece.
Line the rim of your canopy with construction-strength adhesive, and attach the rim to the center of the plywood piece. Allow the glue to completely dry.
Fill the vase with sand or decorative pebbles before you fit the piece into the mouth of the lamp. The weight will anchor your vase against the weight of the shade and light kit.
Fit the appropriate “stopper” from your bottle lamp kit into the hole at the top of the chandelier canopy. Insert the bulb socket into the stopper.
Place the lamp shade’s “slip uno” fitter onto the socket. This fitter type sits on the socket. Screw the bulb into the socket and plug the lamp into an outlet to test your completed vase lamp.