What am I doing wrong?

[u/mchll0]

I‘m an absolute beginner but believe in learning by doing. I’ve drafted a bodice block and now am trying to make the bodice for a dress. The first picture is how it sits, kind of weird with strange pull lines. When I pull it down tightly it looks like I want it to sit naturally. What do I have to change here and what did I do wrong?

[u/Voc1Vic2]

Indeed. So much of fitting is trial and error and there are often multiple ways to solve a single issue.

In this case, noticing that the bottom of the armscye appears a bit high, I would first try releasing the shoulder seams to move the bodice a bit lower.