I think you should just be yourself!

Now I know I've not spent much time in your company, but I didn't find you to be big & loud & clumsy & course at all. Maybe you were just on your best behaviour and would normally have been belching and farting like a docker, but I don't believe it somehow! :)

I mean by all means, be more floaty and delicate and all that if it makes you happy. So long as you're still you, that's the important thing.