You have gotten incredible advice from the women here, so much so that I hesitate to even chime in. Justsomeguy's post is also very relevant and important.
I do want to second these statements:
don't put pressure on her orgasm or whatever.
Don't be afraid to fail.
Don't ever take it personally, or make the woman feel bad for not getting there.
Nothing that kills a lady boner faster than a lover who is waiting for the microwave to ding!
You know that everyone and every body is different, of course, so you and your new partner will have a learning curve no matter what. And often, *even if* you're an amazing sex champion, first time sex with a new partner is silly and awkward and doesn't quite go perfectly. As long as you've removed your ego and are just right there in it with her, this is all just part of the fun of it. Try your best, smile and laugh, move on to the next fun sex thing together.
You're two adult humans, free from the kids for a night, naked in a bed together. Life is pretty good no matter what happens.
~
Beyond that, here are some things that will also help you on your journey:
1. Consider your manscaping situation. Research it if you have to. Make your whole situation as much of a fun playground as possible for her (but in a way that you also feel comfortable and confident about). I'm talking specifically about trimming/shaving. Happy to get more explicit if necessary.
2. Consider your hygiene situation. A subtle scent (cologne, some sort of body spritz, even just really good soap applied with an exfoliating bath sponge thing) will not only make you smell awesome, but it will make *you* more confident. If you go the cologne route, just start with a single spray to your chest after a shower. Don't douse yourself in it.
Along the same lines, rethink everything about your laundry detergent, fabric softener, body soap, shampoo, your deodorant, toothpaste, and mouthwash. Maybe it's all good, maybe it needs a tweak.
Floss.
3. Consider new clothes that make you feel great. Not just shirts and pants. This goes for shoes, socks, and underwear, too.
4. Clean your space. Have the bed made and your room clean. Toilets, tubs. Dishes done. Etc.
5. Do your own research and improve your sex techniques on your own. Yep, this is a thing you can do. There are some pretty great books and media resources that can really help you in ways you didn't even know you needed help.
I'm talking about cunnilingus here, guy. It's a learned skill, not something you're born knowing how to do, and you absolutely can get really good at it.
~
You're gonna have the time of your life.
[This message edited by Okokok at 10:50 AM, July 19th (Sunday)]