Place the Color 1 and Color 2 2-7/8"
squares right sides together and all edges aligned. On the back of
the top square lightly draw in the diagonal. Stitch a scant
1/4" away from this drawn line on each side of it. Cut apart on
the drawn line. This will give you two half squares. Press seams to
the dark side and trim to measure 2-1/2" if needed...