Margaretjeffers, Are you planning on adding any blocks other than pieced blocks like the ones shown? You might try what Djane did with her layout, only having your
basket as the center instead of a star. Don't for get the 18 inches need to be 18 1/2 to include the seam allowance and still fit the distance of 3 pieced 6 inch blocks plus
their 1/2 inch seam allowance. You could make several borders to get the size so it would be math friendly. I think I would just make the yellow triangles bigger and float
the points of the basket block so they end about 1/2 inch from the edge of the finished block. I have included a screen shot of a modified shoo fly block where the little
4 patches are floated within their piece. Look how the points don't quite go to the seam at the edge near the middle. HelenW