Gauge:
26 sts x 37 rows = 10 x 10 cm (before blocking)
26 sts x 36 rows = 10 x 10 cm (after blocking)

My first top-down project.
The pattern is perfect and very clear.
I think the sleeves are a bit too snug at the beginning, I would prefer them to be a bit more loose (size S).
And there were folds in the front top garter st. section, but this problem was fixed by blocking.
I made decreases at the beginning of enging sleeves and body garter st section (decrease every 8th st for sleeves and every 10th st for body at the first row of 20 garter st rounds).

I am very happy with the final result. It fits good. I like the top-down seamless technique and find an I-Cord binding is a great nicety that makes the cardigan more interesting.