P. S.: I'm black making it even more harder to smile and take a picture, in addition to being a guy.
Most Helpful Girl
Hold the phone/camera in front of you extend your arm as much as you can. Get great lighting to show your face as much as you can, light can make you look different too. Angle it as you please, in front, up top, slightly forward, up and out to your right or left or whatever way. It isn't a difficult thing to do really.