@Schwarzkreuz: Thank you, SK! The transitions are strong, that's true, but I think it fits into a setting of a disrupted world.
@Diamond: Thank you, Diamond. I think I will add more decorative elements when the map develops further.
@Viking:Thank you, Pieter! There have already some centuries flown down the stream of time since the downfall of this world. Civilization is slowly emerging again, so there are some kingdoms and empires, but also many city-states, monastery orders and a lot of primitive tribal areas. My goal is to show a lot of political and cultural information on this map.