I almost always have a faraway look or strange head-tilt. Sometimes candid shots are better if I am talking or laughing. Sometimes they are absolutely awful. If I am surprised, and look at the camera at the last minute, it is usually a sideways look that looks like I am angry at the world.
My father in law, with whom I have had a rocky time of it, told me once that I always look mad. I think it is just my resting expression, lol.
What I find baffling is that sometimes I have been told I am beautiful. I wouldn't describe myself as beautiful; when I get this comment, it is always from other people. I fail to see it in photos, that is for sure!!
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"Them that don't know him don't like him,
and them that do sometimes don't know how to take him;
He ain't wrong, he's just different,
and his pride won't let him
do things to make you think he's right."
-Ed Bruce