Rough sex tips

So me and my husband is getting into rough sex or light bdsm. He likes to be the dominant one. So far he has tried hair pulling, scratching, covering my mouth with his hand, and its like he was grabbing ahold of my shoulders and pinching me. All of that feels really good. I was just wondering what else we may can try. Ive tried looking it up but cant really find anything good. So if anyone can give me some tips that would be nice.