Ummm 😬 help!

Sooo this guy and I have been talking for ages and there is this really obvious sexual chemistry. We decided to meet up for a bit of fun in a few days. Neither of us want a committed relationship but it’s good to have that nice bit of sex every once in a while. This is my first time with him and I just wanted to know how to stop the nerves and just do it. Any advice to make it the best he’s ever had? X