First of all, it is a very nice picture. Compliments.

I shall try to be as clear as possible by listing the ''goods'' and the ''bads''.

Good; The focus on the man's face is brilliant and technically superb. The daylight on the man's head makes some nice colours and the green of his coat comes out better. The place where you took the picture, is very nice as well. The backgroundcolours are not interrupting your meaning of this picture, they even make the picture better and more interesting to look at. The viewer really asks himself at what kind of place this photo is taken. The rain on the man's glasses gives the photo an extra impulse; it suggest's that the rain just stopped a moment ago.

''Bad'': I do not feel the emotions of this man. And, if I understand your way of working well, it is your purpose to catch those. The man looks into the camera but I cannot see if he likes it, or not. Is he a happy man? I can't see it. He just looks. And I know, it is damn difficult to catch emotions from a stranger.
But, for example, when you made a joke just before making the picture, you would have a totally different picture. You would see the emotions of that man, even these emotions were created by you.

Because of the ''absence'' of a clear emotion, I think the impact of this photograph isn't as big as it could have been.

I hope you understand this is a minor flaw, it isn't a ''mistake'' or something.

Hopefully, you're happy with this critique and can you do something with it.

Greetings,
Maarten

serious, thoughtful and intriguing ...
I love the photos of strangers ...
usually difficult to persuade them to pose, or rather a few moments "do not pose" a left himself an outsider, a stranger, in their thoughts and without poses ..
all managed here ...
he was a little nervous, can not even trust this black eye of the lens ...
differences focus on the eyes and slightly to the wrinkles around the mouth. It could be a little lower aperture for DOF less dramatic, but it does not interfere and generally conveys the mood.
Excellent misty background, does not prevent focus on the portrait .
I really like the whole short story that I see here.
Thank you for sharing...