Thanks, altough it'll be a copy of the Netherlands map for about 3/8... Okay, not really a copy, I want to make it a bit more life-like, the Netherlands map was probably from an svg from the internet, and not hand-made because you can see the borders are a bit boxy sometimes.
I want to make my map more realistic, here's a picture of Rotterdam I've made myself:

And here's the variant already online:

I did the same with Antwerp.
Ok, now I see this map compared to the other one, I see I made some border mistakes with the commune Maassluis, but I'll fix that later. What do you think for so far?