Black fine-line permanent marker. Scissors, ruler, pencil, thick craft glue, iron, craft knife. Following manufacturer's instructions, fuse iron-on adhesive to wrong side of fabric scraps. Do not remove paper backing. For fabric leaves, trace one heart pattern onto three different fabric prints, transferring pattern onto wrong side of fabric.
Transfer stem to back of remaining fabric print.
Cut out pieces. Slightly overlapping bottom of hearts, fuse fabric leaves over paper shamrock leaves. Use marker to outline fabric shamrock with a broken line. Glue button to center of shamrock. Tie twine into a small bow with tails.