In most instances Cameroid should pick your webcam automatically after you've approved the request to access it. In some cases, most notably Macs with built in iSight cameras, the wrong device will be picked and you will not see the webcam feed. Thankfully, you can resolve the issue in a couple of easy steps. The process below was tested on an iMac but should work on most systems having issues.

First, right click (or Mac-key click) anywhere on the Cameroid interface and then select "settings". Then, a small settings window will pop up. Choose the webcam icon and then in the drop down menu in that section select your webcam, in this case "USB Video Class Video" which, surprisingly, is the name for iSight camera.

That's it. You should now see yourself in the Cameroid window. Happy snapping.