Be more articulate than they expect. Nicer in person than they would have thought. Have more ideas than interns usually do. Make honesty a policy where few do. Be in way better financial shape than anyone would guess. Reveal that new or interesting hobby later, after they already like you. Keep that stick behind your back until you really need it — pull it out an whack them with it right while they’re in the middle of doubting you.
My goal as a writer and as a person is to undersell and overdeliver. There is very little upside in the long term at attracting fans to your work by posting pictures of you on a private jet. Or talking about how much money you make — particularly if you are exaggerating that number for effect. The same goes for name dropping. Or adding extra labels to your name. Ryan is an angel investor, entrepreneur, MENSA member, whatever.