I was recently out on my second experience with a provider in decades, who I found to be unexpectedly hot in person, even after thinking he looked plenty hot in his photos. After a some quick hellos and a sip of water, we headed to the bedroom where he starts right into making out with me. It was amazing, but I was such a bundle of nerves (or overawed as @LD19847 said) that I was shaking and I myself said something about being nervous when we first came up for air.
In the sweetest and most casual-but-not dismissive way, he said "No need to be nervous." From there what proceeded was a super-fun couple of hours. I think it helped me to acknowledge my nervousness, but not give it undue attention or significance, and know that he was OK with everything that was happening, too.