Initiating sexting

So, I’ve never sexted with my bf and we’ve been together for a little less than 2 year. We haven’t actually had sex yet, but we’ve done basically everything up until that point. When I’m really horny I wanna try sexting him but I’m too nervous to initiate it because I don’t know how he feels about such. I’m a very anxious person too so I just don’t know how to go about it. Any advice would be helpful <3