Here's how it starts. ( I am using a scrapbooking case to store the blocks as they are 12 1/2 inches square )
And...
Then I sew the triangles on all four sides of of the corner squares...
After pressing the seams open I have the corners for two blocks...
And Voila!
I haven't decided if there will be sashing or not. Then I saw on the cover of a Fons and Porter Magazine that Mary Fons had done this block on point...hmmm....
(If you scroll down the Magazine page to March/April 2013 you can see what I mean)