Don’t ever do the duck face/kissy face pose.
Make sure if you have any facial hair (including nostril hair) that it’s neat and trimmed. Don’t shoot up into your nostrils.
Don’t furrow your brow, it makes you look like you are mad at something.
If you must use a bathroom mirror to get the shot, make sure you crop out the evidence of being in a bathroom, such as urinals, toilets, dirty towels etc. Then look into the mirror as if you are looking at another person, rather than down into the camera which is usually held at crotch height and really looks silly in the photos, crop that out too.
If you can listen to some really funny comedy while you are setting up your pose, you can get a real nice, natural smile, or yourself laughing, no fake smiles, they look harsh.
Sometimes a slight grin and a look to the side, rather than directly at the camera is a nice shot.s.
Don’t stick your tongue out ala Miley Cyrus. Also don’t do any gang/rapper hand signs. Take your hat off, or at least do not wear a backwards or sideways baseball cap, ever.
Crop your face. Sometimes too much distracting background stuff can look weird.
Have your camera slightly above your head, with you looking up into the lense, rather than below your face, which will give you a terrible double chin look even if you don’t have one.
Don’t rely on unnatural interior lighting, it will make you look scary and dead or sickly and old. Don’t ever use a flash inside, but you can use a flash to enhance the light outside, especially if your face is in shadow, or there is a light source coming from behind you, like a sunset.
Practice doing your natural smile in the mirror, many times, before you take your picture. Fake smiles look creepy.
Let me take it. I’m a good photographer (of other people) and dogs and cats, they always turn out looking cute.
Avoid creating the illustion of a double chin
This is why having the camera slightly above is better than slightly below your face
Silly Gang Signs and Duck Face No No’s
Don’t wear a headband. Don’t stick your tongue out. Don’t flash gang signs
Crop out the evidence that you are in a bathroom
Don’t scowl while at the same time doing a duck face
Don’t wear a sideways baseball hat or try to look like a rapper
Don’t be this guy