Advice please?

So there’s this guy i’m kinda talking to at the moment, we’ve known each other for a couple of weeks and he says he’s into me and wants to have sex and go down on me, only problem is i’m really insecure on the way my vagina looks and scared he’ll think it’s ugly because i don’t have the typical “tight” looking vagina and i’m scared that what if i taste funny down there or like how do i make sure i taste good ?