One of the best ways to make your webcam video look its best is to make sure you have good lighting. Really, any lighting that you put a little effort and budget into, will do wonders. The key is to get adequate amounts of light in front of your face so the audience can easily see you and the camera will look it’s best.
You can accomplish this with any lights you have in the house, office or wherever you are recording from. Often I just use a nice large window (see below) with plenty of daylight coming in. This looks wonderful but can be hard to control. When the clouds pass in front of the sun, your lighting will change dramatically and while I love the look of natural light, the best way to ensure you have consistent, great looking light is by using lights that you can control.