Assemble Border Units
1. Use a pencil to mark a diagonal line on wrong side of each blue print 6-1/2" square.
2. Referring to Diagram 4, align a marked blue print square with left-hand end of an aqua print 6-1/2 x8-1/2" rectangle; note direction of drawn line. Sew on drawn line, then trim excess, leaving 1/4" seam allowance. Press open attached triangle to make a border unit A. The border unit still should be 6-1/2x8-1/2" including seam allowances. Repeat to make eight total of border unit A.
3. Repeat Step 2, placing marked square on right-hand end of aqua print rectangles, to make eight total of border unit B (Diagram 5).
4. Join a remaining blue print large triangle and an aqua print large triangle to make a large triangle-square (Diagram 6). Press seam away from aqua print. The large triangle-square should be 6-1/2" square including seam allowances. Repeat to make four large triangle-squares total.