How To Write A Covering Letter For Job Application . First, read the job description, then read the cover letter. Aim for half a side of a4 (or one page maximum), and. How To Write An Application Letter For Job Vacancy JobVacanciesinNigeria from www.jobvacanciesinnigeria.com.ng The name of the hiring manager and their professional title. I would greatly appreciate the opportunity to meet with you to discuss what i have to bring to the position at abc company. Start with a professional cover letter header.