If you take a photo in an Auto mode, the face will be too dark so your friends would not be sure if that person is you or someone else. Or if your camera decided to expose your face properly or used Flash, it is very likely that you will look great in the photo but the background will wash out! Your friends wouldn't know if you are on the top of the world or looking the window of your office building LOL.
Photo 1: Exposed for the face will wash out the background.
I changed the camera mode to Manual mode. Set shutter speed, aperture and ISO to these values! Had my family sit in front of the glass and I took a new photo with Flash. As I turned on the flash, there was enough light to brighten my family! The shutter-speed of 1/640 second, aperture of 4 and ISO of 100 was enough to bring in the background!