 FACT: SPOILER: While standing in the first victims sewing room,  Clarice recalls the diamond shaped pieces of skin removed from the  girl found in the river, which she realizes resemble darts that are  commonly used to reduce fabric bulk in the waistline, making a  garment more fitted. The problem is, the dart shapes cut from the  skin resemble the part of the fabric that is wasted, the unwanted  pieces. It is a negative of what this killer would have wanted to  keep, if he were making himself a garment. The killer would never  have wanted those skin items. Later it shows him sewing on one end,  single thickness. Hes not sewing anything to anything else, and  hes using a piece that is typically cut off and discarded in the  process of real garment construction. Although a human skin garment  is implied, most of the examples of sewing are factually erroneous  as viewed by anyone experienced in tailoring.