This is fantastic stuff. You're the Bob Ross of Cartography! I love how you explain the thought process of creating more realistic shadows by understanding the properties of light. Keep 'em coming!
Wow, Clayton, compliments don't get much better than that! My work is actually highly inspired by stuff I learned from Bob Ross (layering transparencies, composition, gradients, dark bases, owning the process, having fun...). Now THAT would be a video.