Step 3Prepare Work Surface
Prepare your work surface by laying a piece of plastic on the table and pile up some sand to make a nice mound. You can also do this inside a box if it will be easier for you to contain the sand. Wet the mound slightly with water from a spray bottle or a fine mist from the hose. You only want the sand damp enough to stick together, kind of like when you were making sand castles as a kid. You can pre-moisten the sand if that will be easier for you. The shape of the mound will determine the inside slope of your bird bath, so keep that in mind when forming its shape. The size of the mound should be slightly larger than the leaf you are using. Lay a piece of plastic on top of the mound to keep the sand from mixing with your concrete mixture.