Pre-heat oven to 150 or the lowest setting you have.
Mix the meringue and sugar together and gently sprinkle the water over the top. Using your hands, mix it until it feels like moist sand. It should somewhat hold up if you grab some and squeeze it together.
Place it in molds, making sure to press very hard to compact it well. Remove right away by flipping upside down onto a non stick cookie sheet.
"Bake" in oven for about 15-20 minutes with the door cracked. Check on them frequently as different ovens cook differently.
Recipe by Saved By Grace at https://savedbygraceblog.com/how-to-make-sugar-skulls/