Some practice writing capitals and a little web shopping led to two useful insights of the day:
-I'm doing virtually all my calligraphy from secondary sources. If I want my writing to look more like medieval examples, I should probably look at those examples more, because they are quite different from the modern "this is how to write this script" pages. Duh. And I actually realized this before at the scriptorium in Walden years ago, but forgot about it...
-the pen I'm using for The Book now is a brause bandschriftpen 180, 0,75 mm wide. I'm pretty sure that the pen I used originally is a little narrower. I ordered a few spares of the Brause pen here: http://www.kalligrafie.com/webshop/index.html?lang=nl&target=d12.html&lmd=39835.958831
I also ordered a Mitchell square pen nr 5 (the narrowest I have now is nr 4), to see if that is the size I used originally (and will beat myself up if it is, because I continued where I left off 10 years ago (or however long ago it is) with the slightly wider pen, which looks a little different.