Hey there! So I've been working in Terragen on and off for around 6 or 7 years, I think, but I want to start taking it a bit more seriously. To that end, I was wondering if anyone had any pointers, or links to references/tutorials on more advanced/realistic shader techniques? I've included my latest project as kind of a reference of where I'm at now (there's clouds in the final project, but they were left out on this render for faster times, I'm working with a computer that was built in 2009). Most of my current technique is just several surface layers of a base color, then child layers for each individual component with variations on the color. I'm starting to work a bit more with different masks, but it's not immediately clear how to get the result I want.
I build my heightmaps in World Machine, export (in this case at 16k) to a .ter file, then bring it in to Terragen.