The front neck shaping is worked with decreases and increases (see photo below and page 2 of pattern). Sweater has optional crochet edging around neck, cuffs and hem. This sweater is a wardrobe staple worth having in more than one color, and it is a fast knit! (from pattern description) Also available on Craftsy.
As you are now probably aware, upper eyelid ptosis is a condition that causes the upper eyelid to appear to be droopy or give a person that sleepy-eye appearance. With this condition, the upper eyelid is lower than it should be (it either covers part of the iris or is very close to covering the iris) and this is caused by a weak eyelid muscle.
Facial droop is sagging of the face caused by loss of facial muscle tone. This is usually caused by an impairment of nerve function that supply the facial muscles, particularly involving the facial nerve. Most cases of facial droop are one-sided (unilateral) causing a distortion of the normal face structure.