Viking Brooch Tutorial

I haven't managed a lot of costume-related activity lately due to my search for a new job (and because I'm doing part-time work in the meantime).  However, I did learn about this interesting page on the Archaeology in Europe site which gives a nice, step-by-step, illustrated tutorial as to the process by which the Viking tortoise brooches were made.  I commend this beautifully done tutorial to your attention, while I attempt to get an opportunity to do some serious working, thinking, and writing, about costume.