First time sex insecurities question!!

So I haven’t had sex but my boyfriend and I have been talking about it lately and I want to do it but he’s like a solid 10 and I’m a good 6 when to comes to body appearance. Like how does one get over how they look naked if your spouse is perfect looking. I’m scared he won’t like me or thinks I’ll be more slim idk I need advice because a girl is stressing and needs that dick reassurance