Making More Realistic Tiles

 In a previous blog I described how to make a tile set using POVRay.  To add some realism to the tile set I took a photo of some rocks and a loaded the original tile set into Photoshop.   I added my picture of rocks as a second layer using Photoshop.  I then used the soft light effect to add a more realistic texture to the POVRay generated tiles and adjusted transparency until I got the desired look.

Here is the original tile set:

 This is the picture of rocks I used for the overlay.