Thank you so much for signing up for Yuletide and offering to write my favourite fandom. You, truly, are a pal.
Don't tell anyone, but the sad truth is that I am super-easy. :) Write a story that you enjoy writing and I'm sure I'll love it and enjoy reading it. In an effort to help, I'll tell you my general likes/dislikes and also give a few prompts for the requested fandoms.
But above all, have fun. If you find that the suggestions feel like a burden, then ignore them (optional details are OPTIONAL after all!) and write a story that interests you. True passion shines through and makes a story special.