I decided that the graphical style that I showed earlier is not what I want to establish on the Rivellon Map. This is why I experimentated a bit and this pixelart style is what I think would fit well.
https://www.dropbox.com/s/fnuxpvzyclfvy3n/Terrain%20Test.png?dl=0Right now it is based on a baselayer, a light layer which brings lights, shadows and therefore depth onto the surface, a texture Layer and as additional element a Layer with trees.
More elements will add more variety and fancyness to the composition! ^^
BTW: This current style is not the final result. there will be tweaks for each layer to create harmony between current and coming elements.
