To make a letter stamp, use your computer and printer to print letters in a variety of fonts and sizes up to 2 1/4 inches tall. Transfer the letters onto crafts foam and carefully cut out. Apply a thick coat of crafts glue to one side of the pine. Arrange a letter front side down onto the wet glue. Let dry.
Launder the napkins to remove any sizing; press. Lightly spray the back of the stencil with adhesive and position on one corner of the napkin. Dip the stencil brush in ink; wipe off almost all of the ink with a paper towel. Apply ink to the open areas of the stencil, dabbing the brush onto the napkin with an up and down motion. Remove the stencil and let the ink dry. Heat-set the ink following the manufacturer's instructions. Sew beads onto the napkins, referring to the photograph for placement ideas.
Wrap one end of the wire around the tip of the needle-nose pliers. Thread beads onto the straight end of the wire in the desired pattern; shape the wire into the letter shape. Twist the wire next to the last bead to secure; trim the excess wire. Tie the letter around the outside of the silk bag with fine cording.