The visual attention in a portrait is supposed to be on the eyes and the hands are not considered to be visually flattering. In #1, the hands are in front of the face and therefore distract the eye of the viewer. They are also over-exposed, possibly to reduce the detail that would even more distract the eye of the viewer. The necklace further directs the attention to the hands rather than the eyes. Skin tones are washed out in #1 as well which creates a very flat face which is also not flattering to the model.