Terrain Raise texture

Unity Engine
1

when I try to create the hills / mounds through the appropriate instrument textures are ruined terribly. Here’s an example:

How do I fix this?

2

You really can’t fix it using Unity terrains as they use planar UV mapping from the top so it will always stretch when you have really steep inclines and the steeper, the more it stretches. Check this out for more help.

3

I understand … there is a simple tutorial on the net to learn how to use it? (Maybe a video).

EDIT
I solved it.
Anyone who serve the method for triplaning look here:
http://forum.unity3d.com/threads/farfarer-is-a-genius-triplanar-projection-on-built-in-terrain.113956/