About the knit:
Made the button band 8 sts wide instead of 10 sts and 4 buttons & holes.
Made the body a bit longer - it measures about 28 cm from underarm (before garter st hem).
Made 5x2 sts decreases to sleeves beginning from elbow.

About the yarn:
Semilla is so soft and made from fine fibers, that it’s easily prone to pilling. This occurred only a few hours of use.
I hope that using an electric lint remover (fabric shaver) will gradually stop this.