It's a bit on the longish side, but I was really proud of my Seraphina Yuletide fic from a couple of years ago, if you want to check that out. If you'd rather have a shorter option, here's The Handmaiden fic from the year before that.

I had fun looking through your fandom list on AO3 and seeing all the book fandoms you've written for! Definitely going to be checking out your Six of Crows and Sunshine fics!