Thanks much Vellum. Taking a look at old cartographers work is only a pleasure and Blaeu is one my favourites. For the border, I sketched the whole thing fast then used some old coastlines brushes I made long time ago to build the land mass. You can easily draw this kind of border with a pen but due to the big size of the map I wanted a more comfortable way to do it. Next update coming soon today (nothing that much, some compass, a little change in bases textures colors) and still working on a few brushes. Then I'll test them.