Interesting sallyanne, a variation of your method.
Ran the Super Pixels 3 times using same settings.
It gives sort of a broken look.
Then Morphological Operation Erosion 3x3 to get thicker lines.
![001-Superpixels3x-MorphOp.jpg](./download/file.php?id=46561&sid=9a102568349b7f018b617274f2eb7207)
- 001-Superpixels3x-MorphOp.jpg (1.67 MiB) Viewed 3543 times
Bump Map, type spherical and played little with the other settings.
![002-Mosaic-Cobbles-BeautyModel.jpg](./download/file.php?id=46562&sid=9a102568349b7f018b617274f2eb7207)
- 002-Mosaic-Cobbles-BeautyModel.jpg (670.68 KiB) Viewed 3543 times