I finally found the right fabric to sew Blouse 114 from Burda 11 / 2020 - the cover pattern of the issue. I bought the pattern, printed it and glued it as soon as it was available, but the fabric I was planning for it turned insufficient. I recently finished another blouse with it, but more about that later :)
A few weeks ago I came upon the same fabric I had in mind, I believe this is ITY with elastane, in this rich wine color. It was a precut 1.2 m piece and was just enough to fit size 36 with my preliminary corrections for height and width.
Another correction I made was to make the wrist cuffs and the waist cuff more fitting. There is a major contradiction in this pattern - it requires very fluid fabric, but expects it to hold a very long cuff - naturally, the cuff slips downwards and gathers. I preferred to keep the elasticity of cuff instead of reinforcing it and to wear the blouse with the cuffs slightly raised.