I started out by purchasing a plastic mold that can be found at any craft store. I also bought the mix for the stepping stone there as well. I came up with a hummingbird design that I wanted to use for the stone. To make the hummingbird and flower I used stained glass. I scored the glass with my glass cutter.
Then you snap them with a pair of running pliers. Running pliers put an even amount of pressure on the glass and snaps it where it was scored.
I kept scoring and snapping until I had the basic shapes for the hummingbird and flower. I refined and smoothed the edges with a glass grinder. To prepare the mold I coated it with vaseline before I poured in the concrete mixture.
After I poured it in I placed the glass on top and pushed it in slightly.
Now we wait for it to dry. I'll upload a final picture after it is dries later this week.