my rules are: I only do yuri and straight, not yaoi.
I only do one on one.
the pairings i like are: student x teacher
brother x sister
werewolf x innocent girl
cousin x cousin
best friend x best friend
bad student x good student
nurse x student
master x slave
I'm not very good being a dominant character.
That said, I like the friends pairing, the good and bad student pairing, and the master x servant pairings. So any of those that you wanted to do, I'd be open for.