SOS: Oral

Hello! So, I recently lost my virginity (a month ago ish) and the guy I lost it to is my fwb thing now. A few nights ago we were texting and I made a sexual joke due to him eating dinner, resulting in him saying to come over and he would eat me, too. WELL, I couldn't that night, but we made potential plans for Tuesday.

A guy has never ate me out before and I'm nervous and self conscious about all this stuff. How do I make sure it tastes good? The smell? Self care tips in general, or routine, would be so nice! Also, what should I expect when he does this? Like what should I do and how does it feel?

Thank you. 😅😭