Hi Martin this is a beautiful image. The composition is great, I like the triangle it creates. Your son Darren is a cutie and his expression is captivating. The background gives beautiful separation and depth. Also using a wide angle you did well avoiding distortion. I hope you don't mind me commenting. Thank you for sharing with apug.
Kind regards, Nicole
Nothing to add to what the others have said apart from stating that I love the lighting and the design with the hand on that rail-like form. His expression is serious and a bit sad and his eyes are very strong, everything's great that is.