Sex with really tall men

Hey ladies, I am curious if any of you have had sex with a man that is really tall like 6’4 and above? If so, what were they like down there? I’m 5’3 and I went out with this guy recently that was 6’8 and I felt so tiny next to him. We are both sexually attracted to each other. However I’ve never been with a man that is his height and I’m thinking that he might be extra large down there. Any tips or advice?