Oh, I'm right there with you. My own letter goes something like this:

Dear writer in the same Yuletide fandom as me,

If you say you know a fandom well enough to offer to write it for Yuletide, then I'd like to assume you actually know the name of one of the major characters.

I'd like to... but OBVIOUSLY and OVER and OVER I'd be wrong.

DINAH DINAH DINAH. Stop calling her DIANA.

Argh!

Sorry. That's been bugging me since Christmas. I'll clean up after myself and go now.