If you don't mind me saying, the maps need a fair amount of work. They're pretty bare. Granted, for some areas its okay to be bare, its not going to be lush in a desert, but you shouldn't have so much open space without any kind of vegetation at all. And you could do with putting so more elevation in them. The first and second screen are pretty good, they don't need so much work, its the 3rd and 4th that need more. Mostly the 3rd, the Oasis area. Its going to be the only area in your entire desert with water, it has to have a crap load more vegetation, its the one area that needs to be lush and filled with desert flowers and what not. Also, add some elevation to that too. The 4th screen is okay, my suggestion is for the area that looks weird. The section that looks like it has been cut off is because that walking path is elevated above the whole right? At some shadows in front of it since thats the perspective we're looking at, so that we know its hanging above it, not sitting on top of it. That would probably help. Deserts can be tricky, but work on it a bit. You have a really good starting point with those maps. Hope I helped