Hi Arsheesh and thanks for your reply. Actually after month of frustration trying to "port" (not just replicate) Saderan on GIMP, I fell back on PS. It seems there is no escape. My plan is to drop PS for all other derivative works and self-contributions that are not Saderan-styled, since I really need PS just to replicate that stunning effect.

About the idea, I'm glad to hear that it sounds good. I searched for a map provided with similar philosophy but found nothing, so I rolled my sleeves up. Now I hope this will take roots somehow, but we'll see.
Bye