What's wrong with this picture?

A group of us meet here at the Farm Saturday mornings to Quilt at the Farm. Four years ago we started the Dear Jane journey dearjane.com . Jane A. Stickle completed her original quilt in War Time 1863 making 169 four and a half inch blocks, 52 triangles and 4 corner kites using a total of 5602 pieces of fabric.
I finally completed the 169 blocks using Civil War reproduction fabrics and connected all the blocks together with 1/2" sashing strips. Then I connected the 13 rows together.  It was only after I hung it back up on the design wall to gloat over that I discovered the error . . . sigh . . . 

If I had a nickle (we no longer use pennies in Canada) for every error, I would be a rich woman. I taught the class as I was learning how to do it myself. This is truly a sampler quilt as we learned to paper piece, hand piece and at least 8 different ways to do applique. And yes, a 1/2 inch error is a serious thing I discovered when I forgot to add a sashing strip between B-5 and B-6 and had to unsew  the long sashing strips and redo them.
Blessings,
Chris