Define your main subject and write or draw it in the center of your blank piece of paper. This should be an over-arching theme that encompasses the entire subject at its broadest level. The main subject is the heart and soul of your mind map. Draw a circle around the main subject.
Define all applicable sub-topics that relate to your main theme. Write or draw them around the perimeter of the paper. Do not over-think this step. The premise of a mind map is to generate information freely.
Draw lines connecting the main subject to each sub-topic. A mind map is a treelike diagram showing where topics and themes connect.
Expand. Add new sub-topics as you see fit. Add subordinate information relating to your sub-topics. Look for relationships and connect related content by drawing lines between them.
Personalize the mind map by adding colors, pictures, and drawings. If you are creating your mind map for personal use, don't worry that it won't make sense to others. If a single image jogs your memory about a critical piece of information, use it.