With a little more work, I think they would be very cool (especially the last one).
I would clone in some 'light' on the dark section of the lamp (under the bulb), and clone out the stem. And maybe darken the lamp up just a little (maybe).
Then (to me) it would look like a full moon over sand dunes.
More so on the last one, because of the shape of the fabric (?).
I think the orangish color help give the effect of sand dunes.
Pretty cool, but I like it better where you CAN see the light stand ... just a bit, not a ton ... because it suggests the sand dunes/desert without trying to outight dupe us into thinking that's what it is.
IMO, I think cloning out the small shadow in the light made it look a vectored white circle. Adding a little texture to the light might give a little more realism.