NaPoWriMo prompt for April 17th, write about the moon.
Each line length is indicating the phases of the moon.

Nothing
Then a sliver
A silver sliver filling a black cup
A jet black, star backed milk filled cup
Asteroid achne mutilated smiling face
Maddening power keep seas in place
It starts to drain, like lunar rain
In the day the same
It remains, then
Nothing