MacLeod, to get more symmetry in the hearts try this. I watched a demo where the guy was knocking out heart shaped unicorn shoes from pony shoes. This method works both sides at the same time. He could do 4 shoes in 15 minutes. As for heads instead of scrolls, those would need to be done a different way. Possibly after step 2 for the rough shape, and the eyes, ears, etc added after step 5.
Step 1, fold the shoe in half so it looks like a J not a U
Step 2, straighten the J out to an I
Step 3, Taper each end down edgewise
Step 4, curve the ends to a half heart shape
Step 5, unfold and flatten out the heart