After finishing the muslin, I was already quite happy with the result. There were a few tweaks necessary (no surprise), but not too many. The main issue was the neckline, which is already clear in Knip Mode’s picture too. The center front was gaping. It was not to difficult to change that. My pictures are from an already altered muslin, and I need to take in another centimeter.
My sewing teacher helped me fit the back yesterday evening, and she made the darts a bit wider and longer. There was a little gaping at the armhole, (still to be seen in my picture), which has been taken care of too. The changes have been transferred to the paper pattern, I’m ready to cut in the real fabric, which I bought yesterday. You will be surprised by the color, not one of my defaults. It’s a plain color, but not yellow (as some suggested for accessories with my artsy polka dot blouse, but I really never wear yellow, not my color at all).