Prepare the mold. Rub the inside of the mold with vegetable oil. Assemble the mold, if necessary.
Mix the concrete. Most premixed concrete formulations simply require the addition of water. Read the instructions carefully, and add the water a little at a time, mixing with the hoe or trowel as you go.
Slowly pour the concrete into the mold, pausing occasionally to let the concrete settle in.
Tap or gently shake the mold for several minutes so that any air bubbles trapped in the concrete will escape.
Allow the concrete to cure by keeping it in a dry place for 24 hours.
Carefully set the mold top-down on a flat surface. Have someone help you if your statue is too heavy for you to handle safely alone.
Gently tap the mold, then carefully peel it away from the sculpture.
Paint the statue, if desired.