Construct each votive sleeve from two strips of pink cardstock scored and folded into two equal sections. Leave a tab on one end for gluing or taping the pieces together neatly.
Trace the letters on the left-hand side of the cardstock and heart shapes onto the right-hand side of the cardstock with pencil, then cut them out using a crafts knife. Use double-stick tape to attach a square of hot pink vellum to the cutout area to give the candlelight a soft, romantic glow.
To mail, tuck the candle sleeves into pockets made from pieces of white cardstock that have been printed with a message, cut to fit, and sewn to the inside of the card using a simple running stitch.
Assemble the inner and outer pages of the card and sew them together booklet-style with a double strand of pink embroidery floss. Tie the loose ends in a bow.
Note: The recipient will need to attach the two parts of each candle sleeve at the flaps with double-stick tape or white glue.