I chose a six inch center square. To make the triangles divide that number in half. The hypotenuse of these triangles finished 3 inches so I cut 4.25 inch squares and then cut two diagonals across the squares to get four QST (quarter square triangles.)
Piecing the blocks looked straightforward - alternate dark and light triangles. Not quite. You don't want to know how I did it but I assure you, it was the most difficult manner possible. I recently found very clear and much easier directions on Quiltville by +Bonnie K Hunter. As luck would have it her blocks are the same size as mine. Another advantage of Bonnie's method is the ability to check and trim the size of the squares as you progress. I wish I'd seen it earlier.
I'm slowly quilting the large squares. Feathers sound good but not a wreath.
Fret not; enjoy the day.