This discussion has helped me to gain a lot of appreciation for the hard work that goes into making a good map. I want to thank all of you who have contributed to it. At this point, I think I will look to (when funds, or publishers, allow) work with a professional cartographer to take the world I've sketched out and generate a realistic map. It's easy to look at the maps Christopher Tolkien drew for his father and then assume fantasy map making is a matter of a nice detailed sketch, but there's so much more to it.