I can honestly say this is one of my favorite projects ever, because it turned out exactly how I pictured it in my head (that doesn't always happen). To pipe a tiny cauldron, you'll need stiff consistency royal icing in black and neon green, round tips #12, #10, and #5, parchment paper squares, and a dusting pouch filled with a 50/50 blend of powdered sugar and cornstarch. Start with the #12 tip on the black icing. Hold the tip just above a parchment square. Squeeze until the icing is about the size of a penny, then pull the tip upward while keeping it buried in the icing. Stop pressure and pull the tip away, leaving a shape comparable to a Hershey's Kiss.
witch hat and the broom on Halloween cupcakes!