Wow, thanks for the positive feedback folks,
much appreciated....

As I said the post work is a bit coarse, over sharpened/fake hdr a little imho...
...There are only a handful of surfaces here, all of which will be getting children etc. soon!

So, I am looking forward to tinkering on surfaces and masks, and digging out my truck tracks clips!!.... (thanks Bob and Ulco... I knew I would not get away for long without any sign of arrival etc.!!!)
I was pleasantly impressed with Snapseed, used with care, some good (finer) results will be possible I am sure.
Render quality and AA and atmo settings are medium at present, so will all have a boost, initial tests look promising.
back to the laboratory!
cheers
J