So what I did was take closeups of anĀ area marked with a bit of red polyester sewing thread - you can see that in the upper left corner of my measurement frame. And these are just a few of the many, many fabrics:

All of these will eventually be cut up and pieced together to form the Bernuthsfeld tunic reconstruction... before that, though, they will get washed and dried and have another photo op. And I'm really, really curious to see how it will come out!