If you are having trouble capturing your face for your custom character or receive a message saying the picture is invalid, try the following:
-The room mightbe too dark--brighten it up. Sometimes the camera will not take a valid picture even if you have lights on, so you must take it during the day.
-The camera is not connected properly or has been connected after the console was turned on. This can effect it also, as the game is very sensitive to creating your custom image.
-An Xbox Live account is required to use the camera feature. However, if your Xbox Live connection is down, this will also stop the camera feature from working.