How does Patrick Suskind use imagery in Perfume: The Story of a Murderer?

Imagery:

"As he grew older, he was not especially big, nor strong - ugly, true, but no extremely ugly that people would necessarily have taken fright at him. He was not aggressive, nor underhanded, nor furtive, he did not provoke people. He preferred to keep out of their way."

"She was so frozen with terror at the sight of him that he had plenty of time to put his hands to her throat. She did not attempt to cry out, did not budge, did not make the least motion to defend herself. He, in turn, did not look at her, did not see her delicate, freckled face, her red lips, her large sparkling green eyes, keeping his eyes closed tight as he strangled her, for he had only one concern - not to lose the least trace of her scent."