I really like this block.
Print or trace the block diagram onto foundation paper, number, and cut out as in the photo.
(The little triangle sections do have numbers in them. If you click on the photo, you may be able to see them more clearly.)
Important! You have to mirror this diagram.
Foundation piece all the sections and trim the seam allowances to 1/4".
Sew the small squares to the small rectangles as below.
Sew together the five block sections as in the photo.
Attach the two side triangular sections.