|For inner sashings,
piece QSTs, then sew those together in pairs. Join to ends of
trapezoid. Join these units.
For outer side borders, sew HST to corners
of trapezoids, then sew on another 4-1/2" square, another trap
unit etc. Start and end rows with a 4-1/2" square. For quilt
top and bottom border rows, just sew trap unit to trap
unit...squares in corners only.
HERE FOR THE TRAPEZOID, HST AND QST TEMPLATES