So, yesterday, I was playing around with a new piece that I had quite a few of, and I came up with this (Kind of) new rock technique. Basically, it's like the other S.N.o.T. rockwork, but without the gaps between each layer. Aragorn is modeling this new MOC. :P
This is the new piece, the thing that makes it special is unlike stacking up two 1x1 bricks w/ a stud on one side, it's 1&2/3 bricks high, which allows you to place bricks on their sides easily. Not sure if that made any sense. :P
I've got a ton of these on backorder for a similar purpose. It's by far one of the best SNOT pieces out there and is really useful for a lot of facings and brickwork on castles, cliffs, you name it. As far as your cliff, the design is good for short slopes, but I think won't work for tall slopes like mountainsides. Granted you're just playing with it, but it's lacking for appearance. Next time you fiddle with it, try adding a few strategically placed cheese wedges and maybe some color variation would be good, and it wouldn't hurt to have some greenery.
The brick is as tall as a 2x2 brick is wide. That should help clean things up. It removes the two plate scenario needed for SNOTwork without the gaps, not to mention that it is much sturdier. I need to remember I have some of those (I think. They're probably hidden away in Star Wars sets.) in my loose bluish gray parts. Oh, and nice cliff.