To fit my 4 year old.

Mods
Went up in needle size: 5.5mm
Cast on 10 stitches
Started ribbing after 6.5 inches/16.5cm
Cast off 22 stitches instead of 18, leaving me with 58 stitches
Short rows: 7, 15 and 23 stitches
Made an extra 4 rows before casting on for the scarf
Cast on 40 stitches on each side
Made the scarf part 2.5 inches/6cm high
Made button holes (2 stitches) 10 stitches after the edge on each side of the scarf