First, I offer case studies in two lengths:
800 - 900 words (see Algenys case study in my profile);
1300 - 1400 words (see EmpowerID case study).
Second, I'm a writer, not a graphic designer, so I will deliver raw text. However, I can invite an expert graphic designer to collaborate on the project. Her work is featured in the Algenys case study in my Contra profile.
Third, I'll include suggestions for highlighted quotes (“pull-quotes”) and a sidebar. These elements summarize main points, catch the reader’s eye, and make the case study easy to skim.
Fourth, I include two rounds of revisions in my pricing.
Finally, case studies can be repurposed for your blog, social media, and email marketing. I'm happy to offer these extra services for a modest fee.