1
Paint several of each rock in different shades of green. Let dry. Turn over and paint the other sides. Let dry. Paint a second coat if needed for better coverage.
4
On a second rock, add vertical stripes of different shades of green paint. Add stripes of white paint and small stars.
6
Starting with the largest rock in the center, add shorter rocks on either side. Continue until the pot is filled. Glue small rocks to the tops of several of the cacti.