The most important part of creating a summary is that restates the main idea, point or purpose of a certain text. That is to say, you have to delete unnecesary details or redundant material to focus on the essential part of the text. This is sometimes made in your own words by substituting "complicated" terms for words that you completely understand (they are called key words). In addition, you can create your own examples about the topic to make your understand easier.
