Descriptive paragraphs aim to create a vivid picture in the reader's mind by using imagery. This imagery is achieved through the use of sensory details that appeal to the reader's senses of sight, sound, smell, taste, and touch.
For example, instead of simply saying "The room was messy," a descriptive paragraph might say: "The room was a chaotic whirlwind of discarded clothes, crumpled papers, and overflowing trash cans. The air hung heavy with the scent of stale pizza and forgotten laundry. A faint hum from the refrigerator competed with the muffled thump of a distant bass drum."
This use of sensory language makes the description much more engaging and memorable for the reader.