I agree about the texture. It looks more like the map was painted on sandstone than parchment. Just reducing the opacity, or if possible, the level of bump would help.

You should remove the sea serpent icon from this thread—ProFantasy's license forbids redistribution of their artwork.

The teeny-tiny blackletter font is still hard to read. A general rule of thumb is the smaller the text, the less decorative it can be. Blackletter tends to be difficult even at normal sizes, for those who aren't used to seeing it.