Right-click on your webcam in the Sources menu at the bottom. Then click Properties. This will take you to a new menu where you can adjust a lot of different settings to enhance your webcam feed and image quality. To start, try adjusting the resolution and frame rate. To do this, click Custom under the Resolution/FPS type and then change each setting individually. You can adjust the resolution of your webcam to get the clearest image, as well as changing the frame rate to the highest your camera can support.