Well, I have the scene put together. the landscape material needs some work, but I'll do that once I've finished the foliage and the vertex colour/decal system for the rocks. I know it looks really monotone right now, but hopefully all of the foliage will help that somewhat.
I'm still getting familiar with different workflows. Masks do sound like a solid idea because of how large the asset is. I'm also curious if decals would be a good fit? Me, I would make this modular. I would paint everything in 3D Coat. And you can be deliberate with where everything needs to go.
Ok, so I'm muuuch happier with my new rocks. In the interests of disclosure, I used a brush pack from Jonas Ronnegard in zbrush to help sculpt these. Im pretty happy with the texturing in substance designer. It could use some more green in the engine I think, but I'll probably use decals to get all that delicious moss onto…