KETCHUP BOTTLE IS GENIUS did this for a baby shower today. Just one letter not words. Froze them but in a few minutes they do start to get hard to pull off without breaking. I made double what I needed and I was glad i did.
How to make chocolate lace hearts for cakes, cupcakes, ice-cream, etc. Could also print out heart designs on paper (in bold so they are visible through parchment paper), place under parchment paper and "trace" designs with the chocolate.