Write down your topic in one concise statement or question. Here it appears as "health food for kids". If it helps, write it as a question: "What are some health foods for kids?"
The introduction functions as the first paragraph of your essay. In the outline, there is no need to develop either the introduction or the conclusion. They are meant as markers for the structure. However, you may want to add your "hooks" to your outline.
There are three main ideas on the outline. These represent the body of the essay, which means everything except the introduction and conclusion. The main ideas are the building blocks or centerpieces of your paper. You will need to study your mind map to divide the paper into three logical parts. Each main idea must support your topic. The main ideas should be more specific than the topic but general enough to merit development.
For each of the main ideas, you add three details. Notice how the details support and develop the main idea. This is where your brainstorming and research come in handy.