Place your bottle caps face down and spray them the color of your choice. You can paint them by hand if you want. Spray painting just makes more of an even surface.
Let them dry.
(I didn't take pictures while I was doing it :P do you like my drawings? :) )
Place your bottlecap face up on your picture of choice and trace around it.
Cut out the circle you have traced and laminate it. I just laminated mine with tape. Then press it down into the bottom of the bottle cap.
Take diamond glaze or I think resin might work if you have it. Dip your paintbrush in the glaze and let it drizzle into the bottle cap until it is filled halfway.
(just pouring from the jar is messy!)
Let dry. It might take a few days to dry depending on what glaze you use.
Glue an earring back to each of the bottle caps with hot glue and let dry. Tada!!! My mom does not have her ears pierced so that is why I used clip ons but studs work just as well. Enjoy!!!