Here's what you should do:
Try to be in a decently lit environment.
Turn on your web cam.
Hold your Christmas card with the square facing the camera.
Don't get a signal ?
Right mouse click into the center frame.
Choose "Settings..."
In the flash menu, click on the web cam icon.
Try to find the right source for your cam.
Would you like Mr. Gingerbread to deliver a Christmas greeting to a friend?