Nice composition. Though I suspect this is the way it actually looked, a little more saturation in the yellow (will boost what looks green to us) and reds would make this richer. Nicely done. ((7))
When I see shots like this I feel that they could really benefit from a black and white or duotone (or even tri or quad) treatment. While the color of the sky pops, the detail of the canyon looks a bit bland. I think black and white, more contrast, and perhaps a tigher less centered crop could really make this pop.
this is beautiful, and i bet it was even moreso in person. what fun you must have had, being there. i hope you are not getting overlooked in this huge challenge, and that you are getting some good feedback. good luck here, and in the challenges yet to come!