I had to cut the tails down to a shorter length to fit Caleb's class and era. I've tacked down the front flap of the tail and stitched on the fake pocket, which will have four buttons on it for decoration. The tail pleats seam to serve no purpose since they're going to be stiched closed as well.
The tail pleat with its two decorative half hidden buttons.
Plugged buttons, on the underside. Poke through the wool with an awl, push the button loop through, and thread a bit of fabric through. The button is secure and flat on the outside of the coat.