While reading What's the polite way to invite someone to do something?, I noticed that many of the comments/answers talk about how things are polite enough for an online chat service. Well, I'm curious what would be the proper ultra polite way to talk to your far far superior superior. A way of saying it suitable for the situation where you need extreme politeness. Here's a situation I'm imagining:
You are the newest employee and lowest on the corporate ladder for a huge megacorporation. You are a master of all polite forms of Japanese as well as being a qualified teacher of English. You by some accident are given the opportunity to talk to the CEO of said megacoporation, who doesn't speak English but wishes to learn. You wish to tell the CEO to feel free to contact you if they have any questions about English or want to learn English from you.
What would you say in Japanese? I've come up with
But I'm sure it could be made politer/more formal.
P.S. I'd also be interested if say you were talking to the Emperor/Prime Minister/Other person of very high status if the appropriate language would change. I imagine it would be different if you were a servant working for a high class family.