19 yr. Female asking ? about .?

We've been together 10 months, madly in love. But i'm still weary when it comes to . I love doing absolutely everything to my boyfriend. But i feel rather embarred almost. He wants to please me in every which way, but im not confident with my body.We've done everything possible, but i when it comes to him pleasing me, i just get kinda nervous. Like what if im not "perfect" down there. Even if i take a shower before hand i just get nervous. helpp!