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.
However, ptosis of the upper eyelid can be a symptom of several health conditions, including diabetes, diseases of the nervous system such as myasthenia gravis, or damage to the third cranial nerve that controls the eyelids. Myasthenia gravis is a serious autoimmune neuromuscular disease that results in nerve weakness.
A droopy eyelid can happen with a unqualified injector, it doesn't usually happen between the eyebrows more in the mid to outer area of the eyebrow. The doctors inject just under the eyebrow in that area and it creates an eyebrow lift but if they do it wrong it can create a drooping eyebrow.