Just use the voice feature and don't use your camera. Take your time and you'll get around to using the camera too. If this person is really your friend, then you'll be fine. Give it a shot. Friends don't bully.
My friend that I've only ever talked to online wants to Skype. We're really close, so he wants to talk and such, but I don't want him to see my face. I have a history with bullying about my appearance. What should I do?