Using molding clay or tape a stick By molding clay and more, while its still not dry. If using a damp clay soils are concentrated on the first. It will make the soil gets pasted coasted out.
Clay sculpture class or paste the molding of the clay jar to dry. If the soil is dry, water the soil using thick paint to stick to it. The soil will not be caught off disintegration.
Use clay mold level or post by soil texture of the clay mold while still dry. If the soil is dry, soil water use thicker paint area to stick out. To make the soil on the disintegration.