This is truly a magnificient scene and tender moment. A slightly closer crop would give a more intimate feeling to the composition. Cropping the left side of your shot closer toward your eyes and cropping up to the right side up your sons shoulder would help to give this feeling.
The catchlight on your sons' eyes really make this a beautiful shot and helps the viewers eye look right at it. Your lighting technique on this shot is extremely well done. The contrast on both side of his face make this shots very interesting and appealing.
A 6.2+ is a good score, you should be proud - I scored you a 7, looking again, I probably should have gave an 8, sorry. I love the innosence in your childs eyes, nice shot.
Lovely photo. Meets the challenge. Nice pose. Great expressions. My only suggestion would be to take a look at it cropped closer on the right. I think that would make the baby's expression central rather than the baby as a whole the central focus. 8.
Great capture. I think the lighting is wonderful and I really like the b&w. I think the crop could be changed slightly, maybe you want to crop off all of Dad's ear (or include the whole ear in the shot). - 8