Looks simple enough, but it wasn't. Especially since I had never made a pillow like this. First, I had to figure out how to do it. So I googled 'double flanged pillow.' I finally found an image, of a linen pillow, that made sense and I printed it, so I could continue to refer to it.
What made this more challenging was the fabrics--the main fabric is a wool and cashmere blend, not horribly heavy, but not as lightweight as linen; the pink tweed is also a heavier weight.
The other challenge was the amount of fabric. There was only exactly enough to make the pillow. There were also 3 other pillows out of the wool/cashmere in a somewhat different style, what I call a fake flange. The 'flange' was not a separate, mitered piece sewn to the body of the pillow. It was just a larger than finished size that was then stitched 1 1/2" in from the outside edge, giving the illusion of a flange, when, in fact, it isn't a true flange.
Anyway, because I had never made a pillow like this, or even the other ones, it took far longer than it should have. And though I do like the way it turned out, I won't mind if no one ever asks for this style again!
The designer has yet to see it, but I am sure she'll be happy.