Video advice!!

So there’s this guy I’ve known for a couple years now, we met whilst I was living in Australia but I’m back home now (UK). We still message fairly frequently and it often leads to a lot of sexting. We’re very comfortable with each other and I trust him completely. It’s his birthday coming up and he’s asked for a dirty video from me for it, with noises, facial expressions and the whole lot which I don’t mind doing but I’ve never done a video quite to that extent so I’m feeling a bit nervous. Any advice on how to go about it would be much appreciated! Do I just get a bit drunk first to calm down?