Go up in the balcony

Oscar Wilde said authors should always go up in the balcony to take another look at their work. You can see so much more than you can at ground level.
Think of your work, even if it's just a paragraph, as something that is being presented on stage. Figuratively walk up in the balcony and take a look down on it. What details do you see that you missed at ground level?
Perhaps you're writing about a man checking into a motel at midnight after a long drive. You write about the sweet young woman behind the counter who assisted him and gave him his room key. Perhaps the man checking in even felt an instant attraction to the desk clerk. Now stroll to the balcony and look down. What you see is the other side of the front desk and the little shelf just below the cash register that contains a plate of now-cold lasagna ... and a gun.
What do those two elements tell you? The desk clerk had the kind of night where she didn't have time to eat - and she felt the need to have a gun at her fingertips. That's a whole new perspective that would have gone unnoticed except for your stroll into the balcony.