Many professionally filmed interviews are shot using the three-point lighting technique, which plays up your main light source and accentuates the film subject. If you're interested in going for a professionally filmed look, MonkeySee has a good video that explains how to set it up. But if you just want to make sure you don't look bad, try different lights in your house until you find a look you like. A dimmable lamp will give you plenty of options.

4. Check the background
No matter where you set your webcam, your potential boss will be able to see at least part of the room. Position your webcam and look at the screen. Remove anything that doesn't look professional and add things that do. For example, if you've won any awards, hang them on the wall behind you. Subtly showing off never hurts.

5. Practice
The first video conference I did was with a group of potential clients I really wanted to impress. But since I had never been on a webcam before, I made mistakes such as talking over other people and making sudden movements that made the camera lose focus. Result? My attempt at displaying my awesome skills turned into a 10-minute, one-woman comedy act.

Don't go in blind. A few days before your interview, use a video chatting service such as Skype or Google Hangouts and hold mock interviews with a buddy. You'll get a feel for where and how to sit, when to talk, and where to look.

6. Dress for success
The other day a friend sent me a joke about not wearing pants during a video conference. It was funny, but not great advice. Not only should you wear pants, you should dress like you would for any interview -- professionally from head to toe. Plan your outfit in advance and give yourself plenty of time before the interview to fix your hair, put on makeup or do any other necessary prep.

Some outfits that look great in public might not on camera. TV people know that wearing narrow stripes can cause a flicker effect called "strobing." A white shirt can make you look washed-out. Best bet? Do a video chat with a friend and show them some options.