getting head

Y'all I need some tips!
I will be having the first form of sexual intercouse next week. (Super weird that I know ahead of time) but it's my birthday and my fairly new significant other is planning a night for us including (obviously) sex. My question is... how do I prepare? I want to make sure my vagina is in the best state that it can be! Also. While she is down there... what do I do with my hands? Questions questions questions!!!