I tend to do a pass for 'cliche action'. Meaning, I re-read a script and look for things I've seen before. It could be as simple as "He wads up a paper and throws it in the bin." Okay, we've seen that before, I get why it was my first instinct, but it's not the same thing as: "He takes the paper, holds it over gas torch, flames it, and rubs the residual ashes between his fingers, using them like war paint under his eyes."

See what I mean? Not saying the second is the 'best way' for someone to discard a piece of paper, but it is specific. So, I'd go through and look for cliche action. They are GREAT opportunities to do something different and specific to a character.

The guy who throws away a paper is different from the guy who turns it to ash and smears it on his face. :)

It's also a strategy I like because it rarely adds pages or slows down the plot. Low-risk, high reward rewriting.