Big ol freak

So my boyfriend is very advanced. I on the other hand am open to everything but just clueless on what to do. I got the basics (except riding) I am plus size aka FAT. so the idea of getting ontop terrifies me even though he doesn’t mind i overthink and ruin the moment. I am literally a deer in headlights when he puts me on top so if you have any tips on that.. that would help

But also, we’ve done anal and he keeps telling me he wants to do more which i am ALL FOR.

But what the hell else is there for us to do. I already done let the man eat my ass. I want to satisfy him for once but I dont know what to do. Please send me some sex advice lol.