Visualize an upside-down triangle. This may sound strange, but a good introduction will drive the rest of the paper. The paper will fall into place because it’s organized, focused, and manageable. Begin with a general statement and slowly narrow that statement to the thesis, which is the tip of the upside-down triangle. If you’re writing about choosing a dog, begin with a general statement about the benefits of owning a dog. From there, discuss benefits and why it’s important to choose a dog carefully. End with your thesis. The introduction will be about seven sentences in length, or half of a page.