Here is a second shirt unto which I have made some adjustments. Like the first shirt, it was too loose on the back. The picture of the back of the shirt was taken after I made the changes:
I have followed the same method. I put the shirt on and marked the small of my back with a pin. I removed the shirt, gathered two small pleats at the top and pinned. I gathered the fabric lower down (2″ on each side of the centre, where I marked the small of my back) and pinned. I ironed the fabric and sew by hand. The shirt being made of a very thing white cotton, the seam is not invisible. Much less than with the first shirt. But thin fabric does that.I could not resist adding a lazy daisy at the top. And one more at the bottom. I used hand-quilting Güttermann thread. White on white for a subtle touch of elegance.
I am well aware that you may not see clearly the details in the pictures. Everything is white. I have included below the pictures of the tutorial I have posted last week. Where the details are easier to see. Maybe you also have a shirt a little too loose on the back…