Now I've got a terrain update although the heightmap isn't finished, so keep that in mind!^^

This new sketch covers settlements, forests, wastelands/deserts, hilly/mountainous areas, coastline

https://www.dropbox.com/s/5s02skswp73vpg0/Sketch6.png?dl=0

This terrainsketch must not be mistaken to be the heightmap!
Everything here is partially only based on terrein and not height, except the mountains themselfs.