I obviously don't want to be in a situation where I would have to back out but does anyone have experience with accepting offers and backing out later? To create an internship offer letter, include key details, next steps, legal terms, and close with a signature section.Internship Agreement and Evaluation Form. Important information that should be in an internship offer letter. This program is designed to provide substantive learning experiences in a foreign affairs environment. Allows qualified undergraduate, graduate, and law students to obtain academic credit while gaining valuable experience in the workforce. In addition to my experience with UNC Pembroke, I completed an internship at the NC Department of. Commerce. On-site activities will be modified at the discretion of internship supervisors. Your internship culminates in a presentation for staff and other interns.