My mods

Instead of 17 inc rows, I did 14 inc rows to achieve desired armhole depth (10,5 cm measured along raglan line).
Cast on the missing sts under the arms: 3+3+3 = 9 sts instead of the stated 3 sts.
Div with the CO sts happened on the WS of the 14th inc, in order to keep in pattern. This means the first rnd of sleeves needs to be a purl rnd (Rnd 2 as per pattern)!