Looking for ways to stimulate my bf in bed

We were recently talking about our sex, and one of the things we wanted to work on was keeping him stimulated during sex. He referred to how he holds my neck, kisses my breast, and talks dirty to me. I’m wondering what I could do for him that is equally sensual and stimulating beyond the P in V. One thing is that I am a little nervous about dirty talk as I am often a little bumbling in everyday speech, so I was wondering if there was any advice for becoming more confident at it. Cheers x