This is fun!
Plush: Please DON'T listen to those who say to tone down your costumes. While you looked beautiful at Art on Ice skating in all black, the flamboyance suits you. Please don't change.
Alexei: Come back to competition only if you can challenge Evgeni, but don't hurt yourself again trying to do so.
Alexander Abt: Please wear more mesh this year.
Sasha C: If you must do that horrible spin at the end of every single one of your programs, please learn to do it without that horrible grimace. Smile when you yank your leg over your head.
Nelidina: Please come with me to see my hairdresser.
Mikey W: Please listen to previous posters. Get a new choreographer. Learn a proper triple axel. And learn that sometimes, it's okay to say nothing. (not that any of us in this thread are following this advice :D)
I'm sure I'll think of more...