I must be compelled to ask: What exactly makes this post-apoc?
There is too much plant life: make the base plate tan and lose the bushes.
Too much color: post apoc should be browns and greys mostly to evoke an image of scrap metal.
Everything looks too advanced and clean, especially the jeep, which should be damaged and scrappy, and the gatling guns and the blue dropship with undamaged canopy.
Speaking of the dropship, its nothing more than the Imperial Dropship set. In a post apocolyptic world, if something is miraculously flying, it should at least show how it is flying. There are no advanced jets or dropships like this one in that world.
-Chuck