I like to try and make maps that fit natural processes as much as I can make them. As an amateur RPG cartographer, with no geological or meteorological training, I make mistakes. Hopefully, they are not mistakes that are too big. In the end, I make the map for my enjoyment and to aid me in making the game enjoyable for the players. Consistency of style is good but, rather than having a homogeneous style for the entire campaign world, I've started trying to create a style for each of my cultural areas.