Maybe the number one reason why people usually don’t look as good in photos as they actually are, is because they’re tense about the very same thing!
Simply quit thinking how your photos will turn out. Take a deep breath and exhale. Never hold your breath, either in or out.
Be relaxed. This helps to, well, relax your face muscles, which automatically translates into a natural, effortless smile and helps give your face a natural glow.
Don’t force a smile on your face. If you don’t feel like smiling, that's fine, just be natural. Any forced emotion immediately adds an element of artificiality which can often be made out in a photo.
If you can’t even make yourself ‘look natural’, then follow this simple trick. Think of a very loving, pleasing or funny person or event of your life just as the photograph is about to be taken. Your face will automatically reflect your thought and you’ll find yourself giving a perfectly genuine smile to the camera. After all, the best and cheapest makeup known to man is a genuine smile!