The best descriptive paragraphs bring fuel to the imagination; the reader should be able to imagine the setting and imagine the same experiences as the narrator and the characters. A writer who is detailed in describing a topic about which they feel strongly about is more affective at writing descriptively.
When composing a descriptive paragraph, first, pick a topic. Open up the scene with a main idea that will give the reader information that is key to understanding the story. Then, consider the five senses and how they connect to the topic. Smell is often the strongest sense tied to memory, so scent is an ideal starting point. Consider that the subject smells like and describe the different aromas experienced throughout the scene. If writing about a holiday dinner, smells like pumpkin pie or the snowy woods outside might help paint a vivid scene for the reader.
Next, consider taste and touch. Even if eating is not involved in the story you are telling, this does not mean the food cannot be described; imagery can produce mouth-watering effects. Write about how each sense experiences the scene being depicted. After the senses are engaged, write a few sentences that summarize all of the feelings. Save the most captivating descriptions for last to make a strong impression.