Mention the exact job opening and number (if applicable) in the first paragraph. • Give examples of how you have used or expanded your skills.With over nine years of experience in interior design, I've developed the skills and knowledge necessary to successfully complete projects both large and small. What to include in a Cover Letter. 1. Company Address. 2. Salutation. 3. I am writing to apply for the Interior Designer position at your company. Got a design in mind for your career path? Check out these five designer cover letter examples to help you get there! A wellwritten, customized cover letter should include the 'company's name, position, and other identifiers included in the job description. An effective interior design cover letter is more than just a summary of your resume; it's your chance to tell your story and express why you're passionate.