You got that uncomfortable-looking smile people wear when they can "feel" the judging eyes of others upon them are waiting anxiously for the reaction. If this is your "idealized" self-portrait, then you gotta appear more self-confident about yourself... unless, of course, that's how you naturally are all the time. If that's the case, then nevermind what I just typed. I, for example, always look like I'm tired or unhappy, regardless of how I actually am or feel. Some are just like that.