To draft the pattern of this evening dress, start from a fitted basic block for stretch fabric with only bust darts.
Mirror both front and back since the neckline is asymmetric and draw the sleeve matching the measurements from sleeve cap and armhole.
On the basic block, draw the neckline and the shoulder/armhole.
Cut the pieces so you get back, front, front shoulder, back shoulder – these two pieces are named as yokes.
Join front and back yokes at the shoulder line to merge them to the sleeve matching the center.
Redraw the sleeve shape.
This is the finished pattern: front, back, sleeve.
