Sakura Doll is a cute pin. Its size is about 28mm wide by 54mm long. It has the details of cherry blossom, that is called Sakura in Japanese too. It uses the dual-inverter chip NL27WZ04 to blink one red LED behind the top flower, with ENIG finish. It is fully documented at https://github.com/nwmaker/sakuradoll.
Looks really cute. Nice job.