This touhou project paper toy is Lunasa Prismriver, one of the many characters in the Touhou Project, she is a poltergeist and one of the three Prismriver Sisters, the papercraft created by Ponta, and Graphig Template from Nasos. There are also Merlin Prismriver and Lyrica Prismriver on the site.
Lunasa wears black clothing, is a violinist, and is the first sister. She has gold eyes, short blond hair, and is always seen with her violin floating nearby. Her band uniform is black, with white and red trim. Her hat has a red crescent moon decoration at the peak. Her alternative outfit in Phantasmagoria of Flower View is same as her normal outfit, except her dress is black.
You can download this papercraft toy here: Touhou Project: Prismriver Sisters - Lunasa Prismriver Graphig Template Free Paper Toy Download