Can we get some details on the situation?
Age, how you know them, how you managed to score a date?
Anyway, decent personal hygiene is a must. Make sure you look decent, hair's not a mess, keep mints/gum/lipbalm on you. Also don't forget to use a lint roller on yourself before you leave, people always forget that. As cliché as it is, you just gotta be yourself. If you're nervous be honest about it, they probably are too and you might get some bonding points out of it. Lastly, when you're holding their hand, lightly rub the back of their hand with your thumb, glance at them and say, "You know, I'm really glad to have met you." Can't say it'll work for sure but it has for me.
I wish you the very best on your endeavors bud, we're all so proud of you!
