How can I make anal sex good for my husband the first time we try?

After watching Ali Wong on Netflix and in person, it's been a running joke with us for almost a year (poking and pretending) BUTT there's never been penetration. I want to do it to him bc apparently it's amazing if you possess a prostate. So to all you Pleasure Princesses who know what's up, what are your tips and tricks to gets the hubs all...