I also like the photo, especially how the smallness of the child contrasts with the bigness of everything around him (yet he seems undaunted by it).(posted 8699 days ago)The Pretentious Black Borders that I often use are made by printing full frame with a negative carrier that has the edges filed out so the opening is slightly larger than the image area of the negative. The oversize filing is not very precise--that's why the borders are irregular.
[The function of the Pretentious Black Border is to let people know that they are looking at Art. That way, they'll know that I'm an Artist and that any blurriness, poor focus, or odd composition is purely intentional. And that it's perfectly appropriate for me to be highly intoxicated while photographing. : ) ]
I try to print full frame unless there's a compelling reason not to, but I'll crop the hell out of things if I think it significantly improves the image. I'm more likely to crop when shooting medium format, often to turn the 645 into a square.