Need tips, about to meet a submissive girl

So I'm going to have sex with this girl, she's submissive and really Into me, this thing is just sex there's no romantic angle or anything. She hooks up with multiple guys but she responds more to me, talks with me more. This is the first time I'll meet and have actual sex because till now it has been online only. Now I need some tips.

Firstly I'm tall like 6'1 and she's short plus she is quite chubby and big ass so I hope you understand what I'm trying to convey here. I need the best positions possible to have her feel weak and good.

I also need tips on where should I take her before we get to bed and how should I make it very sexual so that once we have privacy we are onto each other.

Help a guy out with the best possible tips please.

Also I'm not that experienced in sex haha