A nice smile as he pans down to his crotch teasing me before he pops le cock out.
If he's naked, please be fully nude...Take off socks!
I melt when a guy is fully naked but wearing Docs.
A smile.
Partial nudity, tasteful but teasing.
Sexiest photo I ever saw of a guy was him standing, with a big smile, no shirt, a pair of jeans and the zipper half way down, but revealing nothing. The more I have to imagine, the better.
There are damn few guys I'd care to see sexy photos of, but if there were, I'd want to see all of him, or at least shirtless.
If you're showing face, then definitely have a sexy grin or bite your bottom lip or something, but don't do your normal cheesy smile or no expression. Showing some chest is really sexy. Either no shirt or have some chest showing or something.
Whatever you do, don't send a dick pic first. They all look similar and honestly dicks are only sexy once you're into the rest of the guy. lol
I want to see his eyes and all the way through to his soul.
Loving these answers! Tasteful and tantalising seems to be the theme.