Things to do:
1. Draw a line around the pot with chalk at the height where you want your glitter to stop.
2. Mix equal parts Mod Podge and glitter to form a thick, sparkly paste.
3. Paint the glitter/glue mixture onto the pot right up to the line in several thin coats, allowing each to dry before adding the next, until the bottom of the pot is totally covered. Let the glue dry overnight.
4. If the pots will be exposed to the elements, coat them inside and out with Polyurethane to seal the glitter in place.