In the past, I've made bat-head brooches based on the Western Pipistrelle, the Silver-Haired, and the Spotted Bats. (You can see them here.)
I'm now hoping to create the likeness of two more species: the Honduran White Bat and the Short-Tailed Fruit Bat! Below is the White Bat and on the right is everyone's YouTube darling Lil'Drac, who is a Short-Tailed Fruit Bat, orphaned and raised by the loving (and knowledgeable) hands at Bat World Sanctuary.
I'll keep you posted as they come to life and you can let me know how accurately they turn out!