The poem cumulus clouds uses an extended metaphor to describe clouds. choose a different element of nature and create a metaphor about it
The sun and the moon are universally used for extended metaphors, and have been since the beginnings of human expression. Some great metaphors about the sun, for example, would include:
Bringer of life, vivid globe of fire, all-seeing cosmic eye, Father of Earth hugging us warmly from the sky; golden, raging, fire torch; fountain of energy; majestic light.
Hope this helps shine a light on you- No pun intended.