I used size L flared out a bit at the hipline. I was able to cut the front yoke and body on the fold as per the pattern, though by shortening the sleeves by an inch.
I raised the back neckline by about half an inch and narrowed the front neckline slightly.
To cut the back out I had to include a centre back seam in both the yoke and body, and move the yoke seam down a bit.
I also had some curved scraps left which I was able to use to extend the sleeve length a little bit.
I made 1/2" wide self fabric bias binding and used this to do a bias facing to the neckline.
So a nice cool top out of the scraps.