*First, wash your empty jars and lids in the dishwasher.
*Spray paint your lids and knobs. Mine needed a few coats. (Depending on what paint you use, you may need a primer for the lids.)
*Clean with glass cleaner. Scrape a second time if necessary.
*Glue knobs to lids. (E6000 is a good one.)
Happy crafting!