[reflected]

This I have been looking forward to with great enthusiasm, but can you kindly tell me where I am suppose to put this marvelous work of yours?

And how does one go about using these great textures on maps? Or better yet, even replacing them in some maps?

Would love to know this too!!!

Open the Load.ini of that map, replace a line, and check it in game (Lowlands, Midlands)
It's mainly by trial and error.