The obvious points of picking photos are to make them (1) flattering, and (2) accurate.
That photo where your skin looks all glowy and you can’t see your cankles? But the photo from 6 years, 25 pounds and two high-stress jobs ago?
So select photos that look good, but could also in some universe be reasonably understood to be you.
Also, your photos send a message beyond “me IRL.” They reflect your taste and your judgment.
Shirtless photos for men (or bikini photos for women) say “I vacation on the Jersey Shore, pump my fist to house music, use tons of hair gel and probably have at least one tribal / Chinese symbol tattoo.” Myspace-style chin-down eyes-up pouty-face selfies say, “I want to look pretty and am not particularly intelligent.” Far-away vacation shots say, “Have I mentioned that I travel? Use proper punctuation and make sure most of the words are spelled correctly.
Relatedly: Select photos where you can actually see what you look like.
Remember, the whole point of your photo is for someone to evaluate whether or not they want to sex you.