suminagashi - Carrageenan - powdered seaweed - thickens water so pt will float buy art supply chains/online. In blender believe 1 gallon warm water per 2 tbsp. Pour into shallow tray rest up to 12 hrs. Set up end of day for the next. Mix watered down acrylic pt, squirt into tray test if floats, if sanks add more water. Drop pt w/eyedropper or small pt brush use comb (foam core w/toothpicks) create design. Lay cardstock star down then lg white paper like "U" center 1st then outside edges.