Great image and concept, well captured. Also, framing by colour is unusual to see here.
While the wave details are beautiful, I do agree I also feel a square crop would have been even more impressive.
The very centered placement of the little boy doesn't work for me on this, a lower angle showing more of the scene and/or a tighter crop around the boy may have been a better option if it was possible.
Truly great photo. Because I have the freedom here I will add my two cents and say I would have cropped this square, keeping the boy on the right edge. If nothing else you'd have a larger presentation in this format and more impact. Though the negative space behind him certainly is quite nice, and plays into your theme very well. Either way it's a wonderful photo.
Fabulously pp'd. Perhaps the wave should not have the glow filter on it, give it a bit of textur and thus contrast to the rest of the image. This is lovely.