Some molds have a built-in design.
Figure A Add colorful, decorative accents to the wet mortar. Tammy Algood of the University of Tennessee Agricultural Extension Service explains how to make a garden walkway with steppingstones. To make your own steppingstones, you'll need a ready-made mold. Molds are reusable, so you can make many stones from a single one. Alternatively, you can use a plastic plant saucer or create your own mold from a low cardboard box.