@Jxmxs00
To further the excellent advice already given, I agree that smiling and body language become much more important.
Just as a practical tip - do a dry run with a friend. Often we cannot know what our sound quality is like or if there is feedback in the room so by doing a run with a friend, they can pick up on all these things for you. You may also find this beneficial to practice 'eye contact' with the camera and also to get your friend to feedback on your mannerisms and body language. I personally speak a lot with my hands but a friend can tell you whether it is distracting/too out of eyeshot etc.
The other thing is to check your connection/background and tell anyone else in the house you have an interview! No one wants the infamous BBC interview debacle with family or flatmates wandering into the camera's eyeline.