1. Prepare the glass surface by cleaning it with window cleaner. Then select any flat evergreen pieces you would like to use. Coat the greenery with spray adhesive.
2. Wait a few seconds for the adhesive to get tacky and then attach each piece to the container with the ends hanging from the bottom of the container.
3. Allow the greenery to dry for a few minutes. Then trim the bottoms with sturdy scissors, floral snips, or garden shears.