I took a picture of myself today with my phone and I looked so hideous I hate it! When I look in the mirror I don't look that bad! My picture made me look like I have a huge fat face with bags under my eyes and tiny eyes :S Why do I look so bad in pictures but not that bad in the mirror?
It could be the camera you're using, your makeup, the lighting in the room, the angle you're taking the picture from. Just keep experimenting with these things and maybe research things that flatter your face shape and stuff.