losing virginity at 20

i am losing my virginity on my wedding night which is in 3 weeks time im super nervous and worried but dont want to seem fridged and put him off! Any tips on how to feel more confident in bed? plus i have never been naked infront of a guy lol so really needing some advice on how to act and feel more confident thanks! lol i dont want the night to end like the gif below 🤣😂😂😂😅