Too much plot summary, not enough analysis. While you need to provide some plot to explain the circumstances that cause your evidence to happen, you don't want to retell too much of the story. You may assume your reader has already read the text under review, so the context you provide doesn't need to offer extensive detail or background.

Remember that summary retells or recounts, while analysis explains. Aim for giving your reader much more analysis than summary.

Plot: John Proctor hasn't had his son baptized and doesn't go to church on Sundays. Parris gets mad at him for leading others away from the church's teaching. Parris also feels that the town has been unfair to him because he doesn't get paid extra for his heating and cooking wood.

Analysis: By showing Parris' anger about Proctor's disloyalty to the church's teachings and about his lack of compensation, Miller demonstrates that Parris doesn't truly care about bringing his parishioners to God as much as he cares about his reputation.

Read further: NC State's Analysis vs. Summary

Read further: UIS's Summary-vs-Analysis