I decided to teach myself typography terminology. And what better way to learn anything but to write it on a blackboard and make sure you stare at it a hundred times a day ?Each piece took around 1 to 2 hours, and was left hanging for 2 days in my room. I mostly used a chalk marker, which is not quite chalk and not quite a marker - but once you get the hang of it, you can get some seriously subtle thickness changes that make for an easier Roman capital calligraphy.(Warning : contains strong language)