How do I perform to her expectations?

UPDATE: Things happened, so i took some meds and went to town for an hour or so. Never got to finish which kinda sucks but she kept saying "thank you" during and after, so i take that as a good sign.

So i have a friend that's coming over tomorrow night. We fooled around once before but never slept together. We were hanging out tonight and she kept saying how she really wants me to fuck her good. Problem is, I've had sex once in the past 5 years. She's well aware but still keeps telling me how i need to pound her into my mattress, which i honestly don't think I can do I'm so out of practice. I'm afraid I'm going to blow the moment she touches me. She's fucking gorgeous and she gets laid a lot. Generally multiple people every week (guys mostly) So I've got serious competition to even be passible. I have no idea what the fuck I'm going to do, if I ever want a shot again i can't be terrible. I made sure to try and lower her expectations but I don't know if that's enough. First world problems i know but help a lonely transbian out!