Restate your thesis that expresses your overall evaluation about the work. Do not copy and paste the same sentence in the introduction. Express the same idea in synonyms.
Summarize the main ideas in the body paragraphs within the closing. Synthesize the essence of your critique in total, unlike individual body paragraphs that focused on one specific idea. Never mention an idea not developed in the body paragraphs.
Place your analysis in context of others. Do you agree or disagree with the consensus judgment about the work? Provide a quote from an expert in the field who agrees with your assessment.