Hi Floss
Really depends on what you like style wise.
I have seen single love hearts;
Trailing star dust
Formed the petals of a flower
Wrapped with ivy trellis that spelt the intials of x
Bleeding a few droplets of blood
With horns and tail or a halo or sprouting angel wings
I have even seen two love hearts melting into each other and looked at first like a cherry on top of an ice cream. The melted part look like strawberry syrup across the icecream.
I am sure you can put your own twist on it just tae your time.
Take Care
Matthew