Thanks for your comments!
@ njeneb and domdib: Well, no tutorial or specific tips from me, but I have included the .tgd for this full-size, higher res version. I don't know what the heck I'm doing- just having fun playing with numbers. Feel free to use and abuse the file any way you want.
@John: It's all your fault, you know.

seriously, I not only have used and re-used your tutorial, but have been inspired by your funky "Bollard Outcrop"
http://forums.planetside.co.uk/index.php?topic=8439.0Credits:
John Robertson (schmeerlap) for his excellent "BenMcDuff TG2 Tutorial;" see
http://forums.planetside.co.uk/index.php?topic=7733.30 (I just played the numbers).
TangledUniverse, Bob (choronr) and a few more of you who have offered help via tutorials, recommendations and great suggestions, as well as each of you who has kindly offered encouraging comments.
buzzzzz1 for his "Abandoned Ship" cloud files; see
http://forums.planetside.co.uk/index.php?topic=8003.15 My settings are a little different, but not much.
Walli for his dry-bush 4 (and all his bushes/objects):
http://www.nwdanet.com/buy-packs/details/34/8/object-packs/dry-bush-bundle-packTips/suggestions always received and mostly used.