Step 1: Gather Materials
You'll also need to gather a bunch of old crap to apply to your garden item. I am using old tile pieces, marbles, coffee mugs, broken flower pots, mirrors, and other odds and ends. Anything that will withstand the elements should be fine.
There are some tools and materials that you will need:
steel wool (or a scrubby sponge)
Thin set mortar
Tile snips (optional, for more fancy designs)
Glass cutting tool (optional, for more fancy designs)
Silicon adhesive (optional, for more fancy designs and for smaller pieces like a flower pot)