Quote Originally Posted by Asfalt View Post
I also realise I might have overdone the mountains. So.. what do you think: Should I revise them and "lessen" the amount of them?
Oh yes, definitely

Other than that, it looks very nice. Promising, I would say, but it will depend on your labeling and also on other pictorial stuff (maps of this time, like the one you are using as model, used to have drawings filling the voids).
There is one issue you could rework on: the rivers. They look pixelated and the tracing doesn't fit at all with the trace of the mountain symbols.