I decided to take a detour, away from conventional mapping, to do some historical mapping of Decton, which can be found here (it's too big for either here or the wiki.
I plan to extend this series to 1900, and after that, possibly convert it into a gif. This is a followup from the less sucessful Katsnelson gif, which can be found here:
The way I made this was simple: I copied Decton on JOSM and started adding and removing sections of it to create the final picture. It would be lovely to hear some feedback!