That was kind of confusing task - at first it should be total hobo hut, made from scraps and junk, but closer to the end I had to change things a bit, since hut's owner (according to the story) was just hiding there, so not that much improvised junk as I wanted.
And I wasn't pleased but appearance of tree, replaced it in Photoshop by real desert tree photo. Guess I should have done the same with scooter, but this one is close to reference, though I would prefer some trial bike.

More here
https://www.artstation.com/artwork/nGLJ9