My shoulder width fix (removing about 1.5cm or 5/8" of width from the front armscye and slightly less in back, tapering to nothing at the bottom of the armhole) worked brilliantly. So much so that I was able to convince myself to spend an entire day of my long weekend in my sewing room and to push through to the finish.
And as these things often turn out, after so many days of serious doubt and funk, I love my new coat!
So here it is.
Look! It fits me in the shoulders!
The pattern didn't suggest a belt with this view, but I thought its plainness would be improved by one. I briefly considered making the buckled straps for the sleeves but managed to come to my senses quite quickly.
As you can see, there is a single button in view at the neck. There are four more concealed behind a fly front opening.
I used some gaily printed cotton shirting or quilting cotton from stash for lining, in keeping with my goal of not buying any more fabric. The sleeves are lined with Bemberg so that the coat will ease over whatever I'm wearing underneath it.
All's well that ends well! I'm going to use the rest of the cotton to make the top from Vogue 7440.