Enlargement-How to enlarge a basic block.
Tutorial on where to put the new side lines in order to give more ease for a jacket
That animation is to show how to make an enlargement on a bodice block to make a close fitted jacket.
Those enlargement values are minimal for jacket.
Enlargement come first, before dart manipulation, before styling, before anything.
The shoulder enlargement is not compulsory. It depends on the style and fashion. The shoulder enlargement was much bigger in the 80’s. Nowadays, it tends to be inexistant : the armhole tends to be closer to the neck and the crown of the sleeve tends to be higher so the top of the sleeve follow the curve edge of the shoulder.