I've just finished a fic that I started, believe it or not, in 2006. It was an absolute nightmare to write, for some reason - I literally worked on it continuously for all that time, though it's not even long (about 1500 words). It's from Maya's POV, which was a large part of the problem, really, because we're given so very little of her in canon. I also had to pack a whole lot of psychological complexity into it, and it somehow demanded to be done in a very "compressed" format, which meant constant weeding out/distilling down, which can be very hard in its own right.
(And yes, I know it's a little mad to work on a piece of fanfiction for that long. To be fair, I wrote other things in the meantime, too.)
Anyway, it's done now, and since I'm not a native speaker, I feel I should run it past a beta. Yet all my former contacts in this fandom aren't active anymore, and I'm not sure anyone
still is, really...
If you'd like to get an idea of what my writing is like, here's my last LoM fic before this one: https://archiveofourown.org/works/345751