Picture of Flip It and Strengthen It
Once dry, pour out the sand, rinse the inside, and flip your masterpiece. Add an extra ring of balls around the top so it doesn’t look like someone took a bite out of it. Make a slightly wetter mix and smear it on the inside to fill gaps and make it sturdier. This is also the moment you’ll realize you’re basically icing a cake that weighs as much as a toddler.