Agreeing with Alida adding a detailed cover letter will make the hiring person want to look at your resume. Make sure your resume is easy to read by highlighting your experience with bullet points. Keep your resume with 1 to 1 1/2 pages at most.

Write a very detailed cover letter specifying all of your skills. Make sure you have a list of good working references and their phone number on the list.

Agreeing with both Alida and Sophie, I would also ask you to be honest about your experiences and express your joy for providing excellent customer service.