how so?
It doesn't look very realistic, and you kept being on a specific pattern with it, instead you should make it vary a bit more. The areas you put the brown cliff walls weren't really appropriate either, it looks unnatural that it just goes straight down.
Instead, I would of added more green , and make it less steep; that hill wasn't a real good place to use cube-scaping, let alone uneven cube-scaping; Use brick-scaping instead of cubes for small hills, you can add more detail like a path that leads up the hill.
