All I released is the tileset for the ground, the cliff skin you see in my preview images is well, a different skin. I did not release the cliff skin because it is largely CnP. If you are interested in using a custom cliff tileset you could check out some 2D tutorials and see what you can throw together yourself, while CnP is frowned upon for uploading resources it does not mean you cannot CnP your own skins for your own use, and doing a cliff tile is actually really easy, as long as you know the right dimensions