Spread out a sheet of plastic or a large plastic bag to protect your work surface. Pour the play sand onto the plastic and make a pile. Wet the sand slightly so that it sticks together, the way you would for a sand castle.
Shape the pile to approximate the size and shape of your leaf, but keep in mind that birds do not like baths that are more than a couple of inches deep. Once the sand pile is to your liking, cover it with a piece of plastic or a plastic bag. Place the leaf vein-side up on top of the plastic, centering it.
Here’s how to repair a cracked birdbath.