How to relax for sex.. HELP

Hi everyone,

I have been with my fiancé for3 years and we decided to be celibate during our courting relationship and we are getting married next month. 2 years before meeting him, I was active for only 2 months ( lost my virginity that time) and since then I have no idea on how to be relax for our first time. He is very patient with me I know but I am scared and I still want it to be a beautiful moment for the both of us.