Using measurements shown here, score diagonal fold lines on letter face with bone folder. Fold bottom left and top right corners toward center, as shown. Fold down triangle at top left and make next fold in same direction.
Turn folded letter over; add mailing label and stamp
Bone folder, from Martha Stewart Crafts
Print a decorative pattern on one side of an 8 1/2-by-11 sheet of paper, and our letter on the reverse side.