How To Write About Certification In Resume . Here are a few key places where you can mention any certifications you possess on your resume: In a separate certification section. Sample Of Written Certification certify letter from certifyletter.blogspot.com While these five options are all potential places to add a certification. The easiest and most common way to include your certifications is to just add a new section dedicated to them. First, create a heading on your cv named “certifications,” and create entries underneath.