Instead of telling the reader what happened . . .
“Julianna felt hot and tired after her walk.”
Use actions, thoughts, sensory descriptions, and emotions to describe a scene or to show how a character is feeling . . .
“Julianna burst into the kitchen, her face flushed and sweaty. She threw her jacket on the floor, collapsed into a chair, and grabbed the newspaper off the table to fan herself. ‘Remind me again why we moved to Arizona?’” she asked between breaths.