How does Ann Patchett use imagery in Taft?

Imagery:

"It was her face, though, more than the lack of jobs, that troubled me. It was a tricky face as far as age was concerned. One minute I thought she was twenty, but when I caught her from another angle she had high school written all over her."

"Carl's hands were shaking. It seemed to be all he could do to even hold on to the gun ... I turned to look at Wallace and that's when Carl shot me."