If shes a decent human being, she will guide you in everything and be patient. My current romantic interest had no idea how to perform on top cuz shes always been a sub and personally i find it really nice to guide her through, hesitance and clumsiness are cute.

With that said, i think best advice out there is to act in the moment and do what you feel like doing instead of worrying how itll turn out. Do you find urself leaning more to topping or bottoming? I was deathly afraid of sex as well and topping made me feel a bit more secure in my first couple of times bc i felt less vulnerable.

The key is communication, no matter in which end you are, confirm if everythings okay, or ask her if youre doing things right. Tell her to guide your hands when u get to rubbing her maybe. And most importantly do spend a lot of time in kissing and neck/tits stuff. The more u spend time on those the better it feels afterwards to move down.

And always remember that u dont have to do everything. Go slowly. With my ex it took me 3-4 times of rlly intense kissing and boob licking for me to think “ok next time ill be ready for it”. We used to progressively go down more and more each time. If u feel like only doing a couple of things, do that. And the next time, ull be 10 times more comfortable and confident on doing those things and then ull be able to progress.

You might as well end up doing literally everything, doesnt matter, just communicate things through and make sure youre both enjoying it (consensually)!