sew 9 "5 1/2" squares together...
Then take that 9 patch square and cut it down the middle +
vertical and horizontal.
then you turn each of the now 4 blocks. sew them back together.. and
the 9 patch disappears.. ehhehhehehe
fun to play with how you can put the 4 pieces together and get a different look.
(I just used the size of 5 1/2 because that is the size of square ruler I owned and it fit on the shirt fronts the best of what I had) It makes a large block so it will go fast, I think the block ends out about 15 3/4 inches square)