In order to show you in the best possible light, please be sure to have a light source in front of you – meaning you should be facing the sun or a light.
Do not sit in front of a bright window as your face will be in shadows. (Your main light source should NEVER be behind you!)
Please place your laptop or web camera at EYE-LEVEL so you look into the eyes of the audience. Looking down not only adds weight to your face, it can seem as though you are ‘talking down’ to people, ie being condescending.
Arrange to record your interview in a quiet place. You can use your smartphone, but be sure that you have excellent Internet bandwidth.