Making a "fake rock city" in the desert for my dragon?

I have my 2 year old bearded dragon in a 70 gallon tank, and she needs a new basking spot. I want to make the tank look like a desert, but I also want to make her a fake rock city based on this: http://www.lizard-landscapes.com/miniature-city.html

Do you think if I painted the city more like an old timey western town, it would still blend in with the desert theme (cactuses, cow skull, sand…) I could have buildings like saloon, blacksmith, bank, and so on… any tips on how to make it look more like this, or other names for the buildings? Any tips how to make it look more like a desert overall?

I also want to make her something like this: http://www.lizard-landscapes.com/Fake-rock-wall-beginner-video.html for the other side of the tank, since it looks so empty in there. Any tips? How to make it have more of a "desert" look?

Oh, and the substrate… last question, I promise. She’s on paper towels now but they’re annoying. Could I use some kind of tile for the whole floor of the tank? What else could I use? I’m thinking of using this fine grain, clean play sand I got, but… she’ll kick it into her food and water bowls. Could I put a tile or something just for her bowls?

Please, don’t feel the need to educate me about impaction… I know the risk, I don’t think it’s high enough to worry, and it’s the owner’s choice. Pizza could give you a heart attack, but you still eat it.

repti-sand is great for substrate. Also I would not reccomend the city for inside the dragon’s enclosure. The city would be for entertainment while playing with him.

Lake rocks from the great lakes are great, and you can also get rocks from petsco or petsmart. But wash them first before you put them in his habitat.

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