I'm usually pretty good at math, and at quilty math. But I guess when I change my plan mid stream, and don't redo the math, well, I deserve this.
"This" was supposed to be a block challenge. The fabric was given and the rules say the finished block has to be 12 1/2" square.
I was going to call the block "Silly Goose" for the flying geese block in the corner that isn't in formation. But I guess it should have been "silly me."