Get basic information about the subject - In order to effectively write a biographical sketch about a person, you need to obtain basic information about that individual. Such information as the person’s full name, date and place of birth and family background are some examples of basic information that can be used in a biographical sketch.List Achievements and Influences - When writing a biographical sketch about an individual, you should mention his or her personal achievements and how accomplishing certain feats affected his or her life. Likewise, you can also incorporate any personal influences into the autobiographical sketch. There are many people who have a number of personal influences.Arrangement of Information - Once you have gathered all the information that is needed to compose a biographical sketch, it is important that you have a format in which you will present the information. When writing a biographical sketch, there are a number of ways that you can format all the details. There are many sketches that are presented in book format with the story of a person’s life presented in chronological order. This is one of the more popular ways to present a biographical sketch, as it allows the reader trace the subject’s life from beginning to present day.Verify Information - Before publishing or presenting a biographical sketch on an individual, it is very important that the information is confirmed as being accurate. If you are writing a biographical sketch, the subject is the best person to provide information about him or herself. If you obtain information about your subject from other sources make sure to verify its veracity.