I was going to join yesterday but saw it was passworded and nobody inside :(
A good example of the detailing I mean can be seen in Althur's terrain. You can easily tell where the cubes stop and the detailing begins.
However, since I'm doing cliffs I didn't bother masking the cubes used in it construction; but all you have t do is add blocks smoothehing out the transition from one block to a baseplate, etc.
As for the ground terrain, look at Althur's valley.