My advice is to not worry about it and don't get your expectations too high. You're going to just be getting to know each other in a new way. You'll both be nervous and if it's a first time for either of you, you have to get used to sex.
If you want to try something special a massage beforehand is always nice. It will slow things down, relax her, and excite you both. I've been married for 13 years and it's still a favorite. My wife still talks about a massage I gave probably 10 years ago (that I don't even remember) and how great it was.