In answer to a friend's query: First I took an ordinary lousy photo of some wildflowers I picked--this is untouched photo: (click all these to see larger)
then we used "levels" & "contrast" on photoshop:

then we played with channels (of colours) some:

then we tried desaturating:

then we played with channels some more:

then we cropped out a really yummy tile:

and with our little tile.....

we tiled out some bigger pieces of digital real estate: