full res reference sheet can be found here: https://cdn.discordapp.com/attachments/427005905708646400/1334994268678394037/ref_sheet_3.png

also a reference sheet for her sailor uniform outfit (she was never actually educated, she just bought it cause it looks cute): https://cdn.discordapp.com/attachments/427005905708646400/1334994753338474567/ref_sheet_3_seifuku.png

The images uploaded to Danbooru were taken from these links.