: Tap the sides of the form firmly while the water is still on top. Stop once the water has drained to avoid breaking the bonds.
: Find a flat surface below the high-tide line where the sand is already damp, but not so close that waves will destroy your work. Sand Castle
Fill the form with about 6–8 inches of "fluffy" top-layer sand. Add water and "mash" or stir it to eliminate air pockets. : Tap the sides of the form firmly