Boyfriend kink talk

I kind of want to talk to my boyfriend about a kinks and fetishes and what we both want to try and stuff, but I have absolutely no idea how to go about it. He’s still pretty new to sex. I was his first (he’s never masturbated, or so he says) and he has absolutely zero experience besides what he’s had with me. It has kind of been slow going introducing new things so not much new yet. I also have a lot of anxiety about a lot of things, so revert to saying things to him in text when I can’t say it out loud. Anyone have any ideas on how to approach this topic with too much embarrassment on either of our parts?