Added a couple of new rocks:
I’ve also hooked the lichen layer up to the red vertex color channel, so you can paint them in only where you want. There are two lichen layers, so you can have a couple of different lichen colors and sizes.
I’ve still got one more rock to finish (for a total of 10 rock meshes). There will be one master material and a instance for each rock. I’ll include 3 or 4 detail textures for variety (you can see two of them in the last couple of shots). Once I’m done with the last mesh, I’ll have to go back and fix some seams I’m not satisfied with (which will require rebaking of all textures 
). I also need to get started on the LODs, but don’t think that’ll be too much trouble. Hopefully I can have this submitted by next week.