Simple tutorial on how to improve the results achieved with the Fake Rocks Tool.
See the attached JPG

This tut has simple steps and requires that you have basic knowledge of TG2.

Here is the TGD Terrain in case you want to try it...
http://www.deviantart.com/deviation/56025886/

Here a sample image generated with the terrain:
http://www.deviantart.com/deviation/56025815/

Hope it helps you.

Bruno.