Replaced the fan pattern with Climbing Shells:
Row 1: 6 dc, skip 2, 5 dc in next, ch 2, skip 2, 3 dc x 22, 3 dc.
Row 2: 6 dc, skip ch2, 5 dc in next dc, ch 2, skip 4 dc, 3 dc x 22, 3 dc.
Repeat row 2. Increase as described in pattern.

Added 5 cm length to the sleeves and the dc part of the body, and 15 cm to the fan pattern part of the body.

Made the shawl collar lower by decreasing 1 st on the neck side every other row 5 times.

Started each row with 2 ch + 1 dc in same st as ch.

Did the arms in the round, but crocheted every other row on the wrong side to get the same texture as in the body.

4 horizontal button holes.