When one’s sister has been obsessed with The Little Mermaid since, well, forever, naturally, one throws her sister a mermaid baby shower. So I grabbed a chunk of modeling chocolate, shaped it into a tail, covered it with blue fondant, picked up a Tip #5, and settled in for the night, punching away. I realized a girl can measure her love for her sister in individually-punched mermaid tail scales. “Yes, I love my sister roughly 7,000 evenly-spaced holes’ worth.”  Then I painted it with gel food coloring and melted some isomalt and poured it on a silicone mat to harden in approximate “splash” shapes. Once they were hardened, I stuck them in the cake.Set those chocolate tails atop a buttercream cake, and voila!