How to make a good impression over FaceTime?

I just got out of a really long relationship and I’m starting to talk to a new guy I’m really excited about. We’re probably going to go out this weekend but first we want to FaceTime (tomorrow night) and I’m really nervous! I haven’t talked/flirted with a boy since my last relationship. How do I make a good impression?? I know this sounds kinda silly but I’m really nervous and could really use some tips!