Form DS-11 is an application used by U.S. citizens to apply for a new U.S. passport. This form is required for individuals who are applying for a passport for the first time, including children. It must be completed in person at a designated acceptance facility, such as a post office or library. When filling out Form DS-11, applicants need to provide personal information, including their name, date of birth, and identification details. Additionally, a recent passport photo and proof of citizenship, like a birth certificate, are necessary. After submission, the passport will be processed and mailed to the applicant.