How does the author use imagery in the novel, Nightcrawling?

Examples of Imagery:

The flying moments solidify inside my rib cage like a photo album in the body. Trevor and I sweltering, jumping, always close to the sky. Alé and her weed, that smile quick, Sunday Shoes, funeral day. For these moments, I forget my body is currency and none of the things I did last night make any sense at all.

He got the tattoo when I turned seventeen and it was the first day I ever thought he might just love me more than anything, more than his own skin. But now, three months from my eighteenth birthday, when I look at my quivering fingerprint on the edge of his jaw, I feel naked, known. If Marcus ended up bloodied on the street, it wouldn't take much to identify him by the traces of me on his body.