Advice?

Okay so my boyfriend wants to go down on me and he's never seen my vagina before and I'm honestly so scared what he's going to think of it. I've always been very insecure of it because one labia is bigger than the other and I know all vaginas are different "like flowers" I've always seen them portrayed as but when it actually comes to someone other than myself looking at it I'm a little paranoid. Him and I haven't been together that long but we've known each other for a little over a year, he says he thinks my body is beautiful and not to be scared but he probably expects it to be...normal and it's not, well not to me at least. I'm just very insecure about it and I don't want him to be disappointed when and if he sees it.