So, we've been short-handed at work which means, because I've had to fill the void, that I haven't had much time to work on this project over the last couple of weeks. I have, however, had time to think about the process and test a couple minor tweaks to a couple of the steps. I just started a new render in Terragen and hope to have it ready for posting sometime in the morning, or, depending on how long it actually takes, the afternoon. The initial results (in Wilbur) were pretty close to what I have been looking for. Once the render is done, I'll have a better idea of what other tweaks I might have to make.