Here are some things to look for. Adjectival and adverbial leeches . Start at the sentence level, hunting for the unnecessary modifiers which drain the life out of prose. Strong verbs are the key to taut writing. If you want the UPS man to deliver a mysterious parcel, he doesn't need to knock, come in, and ask Reggie to sign for it.
Some writers try to punctuate emotional scenes with histrionic exits.
If the scene isn't angry enough, fix it. Don't slam the door. Unnecessary scene or time switches . Aristotle was wrong about physics but he was right to recommend unity of time and place. When you change venues or let time fly, you take on an extra narrative burden.