1. Cover the hole at the bottom of the pot with tape. Turn the pot upside down.
2. If the paint is very thick, thin with a little water first. You can also transfer the paint into plastic cups to make it easier to pour. Then gently pour paint, one colour at a time, over the bottom of the pot so that it trickles down the sides. Move the pot around to ensure an even coverage. You can then add glitter for a bit of extra sparkle. Transfer to a piece of baking paper to dry. When dry, remove the tape from the bottom.
3. Tidy up the rim and inside of the pot with paint. Add a coat of varnish to seal the paint and to make it durable.