How to make plaster handprint. Baby, child, or adult castings

How to make 3D handprints using plaster of Paris. Hope you enjoy making prints and memories of your loved ones, like we have. List of items used: 200g Plaster of Paris (150ml water) Depending on size of casting 3 tubs of play-doh, Rolling pin, box with bottom cut off (Duplo/Lego bricks made into a box would work too), Board, Black acrylic paint, Brown acrylic paint, Treasure Silver wax gilt, Sponge brush, Clear Matt varnish Spray