How to be DOMINANT

[bongacams]

So I have a potential client on Skype who wants me to do daily sessions of dom/sub on Skype for an hour. I've never done this at all. He wants me to dominant him. Of course I am willing to do it but I need some tips on how to be dominant. I know it's all about playing a role but I am not good at acting lol.
Any tips from a you pro doms will be helpful. Thanks!

Also any tips on SPH would be helpful as well. I just don't know what to say and I want to sound natural when saying it