Choose simple illustrations. Like Jesus, use little things to explain big things, and easy things to explain difficult things. Do not add needless details that complicate the illustration. Make sure that the features of your illustration really apply to the lesson you are teaching so that your listeners are not distracted by mismatched elements.

Keep your listeners in mind. Select illustrations that involve activities and interests of your listeners. Be careful that your illustrations will neither embarrass nor offend them.

Teach the main point. Focus on illustrating main points, not minor details. Ensure that your listener will remember not merely the illustration but also the point of instruction.