Three Parts

 There are three parts of your Christian testimony. First part is your life before you became a Christian. Second the salvation experience in detail. Thirdly your life after your salvation conversion,  The ministry, the backsliding, pretty much the ups and downs of your life that separated you from the nonbelievers that you live and work with. The ministry that you are in or different ministries that you have been in. The church or churches you have attended the ministries in those churches. Things like that after your salvation.