A good theme statement provides the work's overall meaning in a broad manner, but with a specificity that comes from the writer's personal voice and interpretation. The statement is a reflection of the writer's clear understanding of previous required work and it offers the reader insight into the writer's summary.
The theme statement uses one sentence to essentially provide the meaning of a literary work. It must be a complete sentence and describe what the author is saying. It does not talk about specific aspects of the work, but its general meaning. The outcome of the work should match the writer's interpretation of the work's general meaning.