You can add a resume and cover letter. But be concise in the 678 still.To be considered, submit a completed State application (STD. 678), resume, cover letter, and Statement of Qualification (SOQ). A resume may be included with your application, however it will not substitute for the information requested on the application. Here's a part time job cover letter template that you can easily copy, paste, and tailor to the job you're applying for.