You will need a stitch holder or waste yarn.
You will also need a cable needle.

Also, you’ll need 6 buttons.

Finished measurements:
Bust circumference: 48.25( 50, 53.5, 58.75, 62.5, 65.75, 69.25, 74.5, 48.25)“ 122.5( 127, 136, 149.5, 158.5, 167, 176, 189.5, 198.5) cm
Finished length:
Sleeve seam:

Yarn used:
Rowan Big Wool
Shown in both 082 Biscotti and 083 Cactus -
19( 20, 22, 23, 25, 26, 27, 28, 30) balls