It's looking awesome, is what!
Only significant change I'd explore is that the rough edge to the key seems odd. The overall map looks like a neatly printed edition; I'd think its proud publisher would lean more toward ornate or geometric borders, instead of the faux-torn look. If you have an in-world reason for that style, it can worrk - doesn't look *bad*, just a little puzzling. My eye wants to make it a coastline every time i stop focusing on the key contents :-).
Can't wait to see the whole thing. Will it be in pages like an atlas, or just one big sheet?