As a conversational aside, knowing that you use Wings mostly, I just downloaded the latest version and it performs way better than whatever version I was using. Maybe I accidentally installed the 32 bit version last time because this installation is like night and day above what I had installed. Very nice. The forced drag docking of the UV editor was driving me crazy, solved in this version. Plus graphically much prettier. I was a bit worried about Wings for a minute there, I mean it's getting buried by Blender but for some things it's just much faster.

Anyway.

When I said "compose" earlier I meant putting the landscapes together. Not making them. So for instance you could take a few smaller grassy rocks and such and combine them together so that the textures aren't so obviously pixelated. See what I'm saying?