I made the first iteration of the maps several years ago, and I had even less idea then of what I'm doing than I do now.
My main concern was to get the map set out - there are 17 of them altogether - and it was a daunting task. I pretty much used the same mountain and same hill throughout all the maps. I don't think I'd do that now, but of course I'm in the process of creating a map for a new continent so I have to keep the same aesthetic throughout all of the atlas maps.
I'm doing jezelf's tutorials to create a poster-sized world map, including several continents that exist only in outline to this point. For that map, I'll be using a wide number of different mountain and hill images.