Lots of little seams to line up.
Print or trace the block diagram onto foundation paper, number and cut out as in the photo.
REMEMBER: If you're printing it, change the size to 5"x8". After all the triangles we've made, I forgot to do this once again.
Foundation piece all the sections. Trim seam allowances to 1/4".
Sew the two triangle sections together along the long straight edge, lining up the seams carefully. I pressed the seam open to reduce bulk.
Attach the bottom section.
Attach the two long side strips.