I have recently drawn a map for my dnd campaign (homebrew setting and story) and I would like to have a feedback before placing the names, settlements and other illustrations.
My initial goal was to do something sober and immersive like it's been drawn by a cartographer npc, does the result match my intention?
Suggestions, comments, and critics are welcome.
How real do you want the cartography angle? It could be a campaign in and of itself.
If by a cartographer, by land or by sea? You will have two very different maps depending on how that map would have been made.
If the map was made by sea, you will have a ton of detail along the coasts and rivers - anywhere a boat can go. But the land will be inaccurate at best, if not blank. If you want to get very granular, consider what sort of ship the cartographer is on. If a galleon, that ship can't get too far up minor tributaries because its draft isn't shallow enough.
Remember - Lewis and Clark spent three years traversing North America to chart a route across the Louisiana Purchase to the Pacific Ocean. If by land, the coast line will be vague at best. However, you will have very detailed rivers.
Also, perhaps don't make your distances east-to-west that accurate. Longitude depends on knowing the time at a fixed location. The New Year's Eve Ball Drop is rooted in this. Tall structures would drop a ball at noon so that ships could set their chronographs to it. By comparing the ship chronograph to the angle of the sun, a ship could determine how far east or west it was.
So how is your cartographer knowing what time it is? If she doesn't know, then east-west distances should be off.
For a good read on this, I recommend "Longitude" by Dava Sobel. It's a quick read and shows how the development of the chronograph and wristwatch revolutionized exploration, travel, and mercantile.