Fairies came to mind, so I colored some royal icing blue and piped & filled the bunny heads and a couple of butterflies:
After making a couple of sketches, a fairy seemed the perfect fit for a bunny head:contest.
She was pretty just plain white, so I set her aside to dry to start fairy #2.
Fairy #2 piped:
Brush embroidery for the wings:
She turned out pretty as well all in white:
Fairy #3- this was getting fun. I was tempted to stop with white fairies, but I really started to wonder what they would look like with a little color...
I had to keep going, so I painted her skirt and shirt...
...and continued with fairy #2:
Oh my goodness, I didn't know how much I'd enjoy painting on cookies.
I sprayed a little silver color spray on the parchment paper and dabbed the brush into it to lightly brush the wings. Although it doesn't show up very well in the photos, it is gorgeous. The silver really highlights the wings.
Same brush embroidery technique as the fairy wings:
The butterfly antennae are also highlighted with a brush of the silver color.