Very good!
Bookmarked for later use. I usually limit myself to gridded cubescaping, which doesn't look very good. These styles could add a whole new dimension to my terrain building skills.
This should probably be stickied somewhere (I still think we need a tutorial section of the forums for stuff like this)
But could you please get rid of the squares in the title? It looks odd. And that very first title image is stretching my screen. Would you mind resizing it for people with low res., like me? :)