Wooz I am very impressed, that means nothing here of course, but I am.....your land's populace seem to harken to the world of Ellison's "A Boy and his Dog" (in The Beast that Shouted Love at the Heart of the World collection), which these charachters could easily be placed....if you havent seen the film based on the story, you would greatly appreciate the comparison, well maybe....Cheers!! http://en.wikipedia.org/wiki/A_Boy_and_His_Dog
Too polished! ie. lacking in detail.
Also, re. the gas tank on his back, you can see the valve end of it, but it does not appear to be attached/plumbed into anything. Perhaps it's just a spare, but seems a strange way to carry a spare (very exposed too).
Thirdly, the posture seems odd; one shoulder much higher than the other, but the head still vertical.