... mmm let me tell you: you look sad because your shirts is not ok and you do not like the hat :-)
With this joke I want to say a few things:
- The sad look probably comes from the lighting (more bounce to get more light on the right side of your face or a fill flash there). Or otherwise move the main light closer to 6-o-clock.
- the artistic expression of the combination of the asymmetric shirt collar and the warm hat is probably something to fine for me to grab.
- looking at this picture I would assume that you generally have the top button of your shirt open ... no need to change that, be yourself (if it has to be a portrait).
What I do like very much is the colors. I wonder even how you got that effect. Is it the PP?