Supplies needed: plaster of paris
water, bowl, and stir stick
molds
pink or blue polystyrene insulation sheets. I used 1 inch and 1.2 inch sheets
exacto knife, box cutter, solder gun
black, white and brown exterior paint and paint brush
i used scrap lumber for my bases, as it adds a little more weight
a creepy face changing pic from the buck store, Mine has a frame - i just cut the image out to fit into our design.
liquid nails/ construction adhesive
First we started my making some plaster casting embellishments. These were made from from a dollarstore doorknocker and ice cube trays. Just mix up your plaster to the consistency of a medium batter and pour into mold that have been treated with a release agent. I used cooking spray.
Now for the fun part .. deciding what our stones are going to say and look like. Carve them using whatever implement you prefer. We used a solder gun - just make sure you carve with this outside - it is Stinky!
We attached these to some 2 * 6 scrap wood using construction adhesive. Then paint your stone in black. Wait for it to dry and add some white and beige dry brushing, to bring out the highlights.
Stick them in your yard and enjoy. 
