Sergio, the soul of this firefighter comes through in this portrait!
I really don't consider myself right to critique your work. Yes, there is a "but" coming...
I am not sure there is anything you can do about it because of the decoration on the uniform. But the two massive orange fringe shoulders are so distracting from the wonderful features of the face. I don't know if it is because they are so saturated compared to all but his skin tones, or the background is very plain.
Hopefully an SOG pro can jump in here and find me wrong or give some suggestions.
If the portrait is from a photo reference, can you post it? How about a close-up of that wonderful face?
Welcome to the Forum. I like your work!