Simple and Descriptive:
* The flag unfurled in the wind, its bright colors catching the sunlight.
* The delicate petals of the rose unfurled slowly, revealing its velvety heart.
Figurative and Evocative:
* As the sun rose, the mist unfurled like a giant, ethereal curtain.
* Her smile unfurled, warming the room with its infectious joy.
Action-Oriented:
* The sailor unfurled the sail, catching the wind and propelling the boat forward.
* She unfurled the scroll, her eyes scanning the ancient text with fascination.
The best sentence for you will depend on the context and the specific meaning you want to convey.