Front panel: chain 44 with black yarn and work in rows of sc, 42 stitches wide, until the piece measures 40 cm square. Fasten off. Repeat for the back panel.

Eyeball applique: with white yarn, magic ring, 6 sc. Increase to 12, then to 18, then to 24, then to 30. [5 rounds total]. Join red yarn and sc one round. [30]. Join black yarn and sc one round. [30]. Fasten off, leaving a 40 cm tail. The eyeball disc is approximately 9 cm across.

Position the eyeball disc at the centre of the front panel and sew around the entire perimeter with the black tail using a whip stitch. Work slowly around the red and black rings so each colour section lies flat.

Seam: place both panels wrong sides together. Single crochet through both layers around three sides of the cushion, working 3 sc into each corner stitch for a neat turn. The fourth side stays open.

Closure: evenly space 3 button loops (chain 5, skip 1, sl st) along the open edge of the back panel. Sew 3 buttons to the matching positions on the front panel. Insert the cushion insert and fasten the buttons.