Select a direction that you want your paper to go. After researching sources, brainstorm to combine similar details together. Be sure that your theme matches the professor's assignment and topic guidelines.
Use active voice in your writing. Active voice commands, describes and shows the reader what is going on in the paper. Choose words like "work," "play" and "portray" for your sentence. Follow up with more active language throughout the paper.
Finding the right place for your theme sentence is almost as important as writing the sentence itself. Place the theme sentence in your introductory paragraph. Explain your theme with strong adjectives and description. Write sentences around the theme sentence that support its main idea.
Proofread your paper and check for grammar mistakes and word misuses. Make sure your theme sentence says exactly what you want it to say. Have a friend read over your paper and ask him if the sentence makes sense. Revise as necessary.