Gather your tools and supplies: A respirator, paint mixing bucket, brush, paint roller and tray, tape, and a cordless drill, whisk or stick for mixing.

Mix the paint:: Measure 6.9 litres of water in a separate container. Add a little over half of it in the paint-mixing bucket. To ensure an even result, gradually add ALL of the dry clay mixture in the water, stirring constantly. A thick mass is formed. Mix until no lumps remain. Add the rest of the water. Mix well.

Let it sit:: Let the paint sit for about an hour. Mix again before use.

Paint the first layer: Apply the paint vigorously and avoid going over the same area multiple times. Do not stop painting in the middle of the surface, as it may result in visible stopping lines.

Allow to dry: Allow the first layer to dry for 24 hours. Ensure good ventilation in the room. The paint lightens and becomes opaque as it dries.

Paint the second layer: Apply the paint vigorously and avoid going over the same area multiple times. Do not stop painting in the middle of the surface, as it may result in visible stopping lines.