11 years older

So I recently got into a relationship with a guy who is 11 years older than me. Everything is amazing. But we just haven't had sex yet. I'm scared I won't, I guess, be up to his "level" in sex experience. Not sure what to think or do because I know we will be there soon. The sexually tension is insane but I keep putting it off because of my anxiety and doubts..what to do or think? I'm nervous!! Or am I just stressing for no reason?!? I do that a lot!  😩