What metaphors are used in The House of the Scorpion by Nancy Farmer?

Examples of Metaphors:

He kept the blinds closed, even though the windows looked out onto a beautiful walled garden. He didn't want anything new in his life, no matter how beautiful.

"His head was fringed with with hair like the fluff on a duck's bottom, and sprayed saliva when he talked."

"You're doing very good for a hothouse plant."