It's still really, really hot!
Print or trace the block diagram onto foundation paper, number, and cut out as in the photo.
Foundation piece all the numbered sections and trim their seam allowances to 1/4".
Out of main block fabric, cut 2 rectangles 1" x 4".
Out of background fabric, cut 1 rectangle 3/4" x 4".
Sew the small pieced sections together in pairs.(See photo)
Sew the resulting sections to either side of the background fabric rectangle.
Sew the main fabric rectangles to the top and bottom of this section.
Attach the two pieced side sections.