What a great shot! I'm going to have try this angle with my boys. I like 95% of what your post work brought out in this, especially the superb texture in the hair - I'll have to check back to learn more about your technique...
Nice and sharp.
I think the overexposed technique works well for portraits, usually tied in with ver high saturation this is a welcome twist with the b+w.
I think you pulled it off.
Back to comment. Excellent shot. Fun perspective and such great expressions. You captured brotherhood all right! Outstanding. I like the high contrast and the washed out whites too. Great freckles! 8