We have all heard the writing rule show don’t tell. In the two examples written below, the first dialogue sentence tells the speaker’s emotion. The second example shows the emotion.
“I won’t do it,” he said angrily.
“I won’t do it,” he said, slamming his fist onto the table.
“I can’t do that,” Sarah said nervously.
Sarah peeled the label off her beer bottle and tore the paper into small pieces. “I can’t do that.”
In both cases the revised version shows the character’s emotions without the telling adverbs angrily or nervously. Go through your manuscript and look for ways you can show emotions through action. Your writing will be better.