Lol, yeah I know. There'll be a mailbag next week.
And you become a Hylian Knight by being nominated by a current Knight and then voted for by enough of them. It's basically a nomination and voting process done to get a concensus and determine how good of a member the person is, because the Knight ranking is basically for really high-quality, rolemodel members. They make good posts, obey the rules, are active, etc. Hope that answers your question for you.