The "bog coat" pattern that is used by crafters as much or more than by historical costumers. I used this pattern for my first Viking caftans. I've wondered if it would work to add triangular gores to this design (e.g., on the outside edges of the bottom half, by cutting from the bottom to the sleeve level at what would be the center "back" of the completed coat, or by cutting partway up the "fold" lines at the bottom).
