[Commission] Post-apocalyptic Louisianal map

[cereth]

This is a work-in-progress of my current commission, a series of post-apocalyptic maps focused on New Orleans.

I'm pretty happy with how the grungy textures of the "paper" turned out. There are about six layers that make up the texture.

I have more geographic features to add, more labels, a key, roads, may do something else with the border, and may still rework the rivers yet.