Hook your reader. You have finished introducing the topic that your essay is written on by the concluding sentence of your introduction. Give the reader a taste of something interesting in the paper that will help to keep them reading.
Transition the reader. You want your paper to flow and have a cohesive feel, transitioning the reader to the following paragraph either by having the information in the hook be what is discussed in the next paragraph or having a connection between the hook and next paragraph.
Edit your concluding sentence. After you have written your concluding sentence, go back and take out any unnecessary words. You want this sentence to be clear and concise, so you do not confuse readers. Confusing readers will deter them from continuing with their reading.