My nieces' birthday is coming up and I stumbled over this beautiful softshell with reflective print at a wandering market.
Lesson learned 1: children's cloths are so much smaller, making them is a lot faster.
Lesson learned 2: they are in fact so small that the arm holes don't fit around the sewing machine anymore and I had to finish the arms by hand
One jacket done, 2 more to go
Ah my bad, lost in translation. I do the shoulders exactly like you suggest. The problem was the lower end of the arm where the hand sticks out. I now do them also like you suggested, with the side+underarm seam being the last one I close on the feature