"I am leaning more towards "Esto se aplica a usted", ... know the best translation. "Cesto" is a basket. Saludos, Earle"
"Gracias. Well, I've been asked to make up some signs for our desks at work because we have some careless ... YOU!" since previous signs on our desks have been ignored. Just trying to grab their attention any way I can."
I have to say that I find this pretty agressive, but you probably have your reasons.
I'd write "=A1Me refiero a usted!"
All the other choices that were given were correct, but I think this one expresses your idea in a better way.
Paula