How to create an analogy?

Writers use many forms of analogies in their work to make a comparison that is memorable and helps the reader better understand their point. Consider these examples of analogies from famous writers and public figures:

"I am to dancing what Roseanne is to singing and Donald Duck to motivational speeches. I am as graceful as a refrigerator falling down a flight of stairs." - Leonard Pitts, "Curse of Rhythm Impairment" Miami Herald, Sep. 28, 2009."If you want my final opinion on the mystery of life and all that, I can give it to you in a nutshell. The universe is like a safe to which there is a combination. But the combination is locked up in the safe." Peter De Vries, Let Me Count the Ways."Writing a book of poetry is like dropping a rose petal down the Grand Canyon and waiting for the echo." - Don Marquis."They crowded very close about him, with their hands always on him in a careful, caressing grip, as though all the while feeling him to make sure he was there. It was like men handling a fish which is still alive and may jump back into the water." - George Orwell, "A Hanging.""Withdrawal of U.S. troops will become like salted peanuts to the American public; the more U.S. troops come home, the more will be demanded." - Henry Kissinger in a Memo to President Richard Nixon.

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