This is how the heart is made:
Print out the template and cut it to size. Transfer the hearts to the corrugated board blank and cut them out again.
Fix the beginning of the wool to the cardboard with some craft glue. Now wrap the wool around the heart until nothing more of the cardboard is visible. Fix the end again with craft glue.
Knot a loop in the end of the thread. Punch out motifs from the photo cardboard using motif punches, label them with your favourite saying and stick them to the wool hearts with craft glue.