Help! Sex Advice ?

Samantha
So, I've been with my boyfriend for about a month now, and we've been having sex for a couple months. He's had 10 partners and he is my only one. Everything in our relationship is great! I feel like I can trust him, he is so sweet to me, and we spend so much time together. 
But so often, I feel like I'm not "enough" for him, sex wise. I don't mean like he needs more people, I just don't feel like the sex is good enough for him? 
I love to go out of my comfort zone and try new things, and I'd say that I'm moderately freaky 😇 but I just have no confidence and I feel like that hinders me from making it the greatest sex he's had. 
He has never given me any indication that it's not good enough. I just want to blow his mind!
HELP!