Heres my terrain after the sculpting, tree and grass placement. I selected different materials to use for the ground from texturehaven.com. There is some post processing here and there and also a self made procedural sky with a custom sun there!
I wanted to show you this because never have I achieved such a good looking environment in any editor before. I have learned a lot from Far Cry map editor but that is a bit different from Unity too. So if you want to, leave some feedback!