Hi Andy
I just play around with the sliders until I get the look I want, I do try and not overdo it which can be easy to do, then finish it off in PS.
I can get similar results from one shot, but have found it works better when the ISO is at it's lowest as they get a bit noisy... in my limited experience anyway.
If you do it off one shot also better if the original is a good one to start with, can come out looking crappy if trying to improve a rubbish shot to start with.
Glad you like it and thanks for the great comments matey.
I think your Eden project one is cool.