Brrr, is the first thing that comes to mind, nice study of the car, it almost looks like you've desaturated the background. the ones of the 'henge (man) I feel like they would have worked better from 6" off the ground (and I wouldn't have laid down there either), though for real effect a graduated filter would have been needed as the sky was a bit pale and featureless.
The lamp could have been taken half a stop slower, it would have made all of it sharp and still thrown the background out of focus I reckon.
The one with the wall is showing a fair bit of CA in the branches in front of the sky.
They're all nice, what do you think of the lens?.