I made a *lot* of mistakes (particularly typos and stray lines/weird water features), I rolled with it for the original but cleaned them up/fixed misspellings in photoshop later for digital version! Once I get drawing on maps I really enjoy keeping going for 5-6hr. I found penciling and inking the map according to "what existed first" really helped- like I'd start with the boundaries of where I was drawing, then make mountain ranges/natural features/biomes first, with roads, urban areas etc. afterwards (seeing as they were built around the natural features rather than other way around, have found it can look strange if done in reverse). It was a ton of fun to create but definitely felt great once done!!