Upload & Sell: On
What very cool shots you have here. You came away with some sweet shots of the dunes. #2 is a really interestings shot that kind of twists the brain a bit... nice work.
As to shooting the dunes in the morning. I tried that once, realized the futility in it to try and find compositions in the pitch dark, so I no longer shoot the dunes in the morning, I save them for afternoon shots where I can set up before the sunset and wait for the good light to come to me... My mornings are spent shooting Bad Water, Zabriski Point, etc, places where it's easier to see and set up in while it's dark.