This film uses an unusual technique for cel animation: after the animation is completed on paper, the drawings are photocopied onto card, colored and painted with oil pastels, Indian ink and acrylic, cut out and applied to the cel using double-sided Sellotape. This technique was used again for Jannik Hastrup's next three films: Subway to Paradise (1987), Fuglekrigen i Kanøfleskoven (1990) and The Secret Weapon (1995).