Dave...dude....not sure what you did to this shot...but man...the cutlines between the foreground objects and the colorful sky look pretty harsh. Huge artifacts around the cacti and the other vegitation. I also see mushyness and color artifacts in the lower vegitation. The right cacti (the teddy bear cactus) seems to be bright and lit from the front...almost pasted in place. (although I know it isnt) while the background saguaro cactus look silloueted.

If I were forced to guess what is happening.....I would say this is your first attempt at a digital blend to get some forground information matched up with the sky....as I know both would have been difficult to capture as one image due to the Dynamic Range.

Would be happy to help you out in figuring out how to get this righ....its an awesome shot...just needs some TLC.

Roman