Write a metaphor to compare a cloud in the sky to something else.
A cloud in the sky is like a fluffy white pillow, softly cushioning the expanse of blue above.
Complete the following task based on the instruction and optional input provided.### Instruction:
Write a metaphor to compare a cloud in the sky to something else.

### Output:
A cloud in the sky is like a fluffy white pillow, softly cushioning the expanse of blue above.