How does George R.R. Martin use imagery in A Clash of Kings?

Examples of Imagery:

"She wore a gown of pale purple silk and a moonstone hairnet that had been a gift from Joffrey. The gown had long sleeves to hide the bruises on her arms. Those were Joffrey's gifts as well." Ch. 3, Sansa, pg. 39

"I dream of a tree sometimes. A weirwood, like the one in the godswood. It calls to me. The wolf dreams are better. I smell things, and sometimes I can taste the blood." Ch. 5, Bran, pg. 74

"A golden man appeared in the sky above him and pulled him up. 'The things I do for love,' he murmured softly as he tossed him out kicking into the empty air." Ch. 17, Bran, pg. 260