I had Merida-style curls as a kid. They were a pain in the ass to take care of.
I'm sorry I can't help you with curling it, but I'll answer any questions I can about taking care of it.
Currently working on:
Princess Kenny -- South Park
Roxy Lalonde Purple Dress -- Homestuck
Trisha Cappeletti -- MPGiS
Princess Ariel -- The Little Mermaid
My favorite cosplays:
Brittnay Matthews -- MPGiS
Mom Lalonde -- Homestuck
Tohru Honda -- Fruits Basket