If you draw the map yourself it's easy enough. I would strongly recommend map making (either imaginative, invented, or tracing real world battlefields or areas) using the mapmaker. It's very engrossing and great fun and so satisfying when you see your product finished, as detailed and beautiful (or not) as you would like it to be. I have in my head to do Goodwood, once I can get some good sources for the map, detailed enough to use, and providing I don't have to make the OOB myself (Haven't learned that yet). Sometime, when I get time.