You might know you deliver outstanding results. Your existing clients might know it too.
But new prospects?
They’re sceptical. Guarded. Drowning in choice.
In today’s world, everyone claims to be the best.
Without clear, credible proof – you’re just another business making promises.
If you don’t show exactly how you solve real problems for real people, you’re leaving your next best customer looking elsewhere.
Trust doesn’t happen by accident. It’s earned – and that’s exactly what a strategic, well-written case study helps you do.
Why case studies are your most powerful trust tool
Think of the key message you want to communicate in each of your case studies. Ideally, each case study would demonstrate a different skill or solution, rather than repeating the same message over and over.
Case studies bridge the gap between “sounds good” and “where do I sign?”
Here’s why they’re so powerful:
✅ They remove doubt by showing clear, real-world results.
✅ They build emotional trust through storytelling – not hype.
✅ They demonstrate not just what you do, but how you do it differently.
✅ They help prospects imagine themselves succeeding with your help.
✅ They stay relevant for years – becoming a sales asset you can use again and again.
A case study isn’t just a pat on the back. It’s a strategic sales weapon you can’t afford to skip.
How the case study writing process works
A powerful case study doesn’t happen by accident. It starts with thoughtful preparation and a proven method:
1. Briefing meeting: We start with a Zoom video call where you’ll brief me on your service, your client, what you achieved for them, and what you want the case study to accomplish. This ensures the story we tell aligns with your goals and messaging.
2. Research: I take time to understand your client’s business and background, so I come to the interview prepared.
3. Question preparation: I craft tailored interview questions designed to uncover the full story – highlighting the challenges, your solution, and the results you delivered. You’ll be asked to review these questions, to ensure they cover everything you wish. And then I’ll share these questions with your client ahead of time so they know what to expect.
4. Client interview: I’ll conduct a professional Zoom video interview with your client, typically lasting 45 to 60 minutes. With their permission, I record the session to ensure accuracy and to capture natural, powerful quotes for the case study.
5. Case study writing: I create a clear, compelling case study structured around the problem, the solution, and the results – along with a polished testimonial you can use elsewhere in your marketing.
6. Review and approval: You and your client will have the opportunity to review and approve the case study. Up to two rounds of revisions are included to make sure everyone is happy with the final version.
7. Delivery: I provide the finalised case study and testimonial as a document, ready for you to use on your website, in proposals, sales presentations, and more. (Professional graphic design is highly recommended to really make your case studies shine.)
Throughout the process, I represent your business as if it were my own – professionally, thoughtfully, and with your reputation front of mind.
I work hard to meet agreed deadlines – but I don’t take on rush jobs. Case study writing takes time, research, and care. If you’re after quick-turnaround copy, I might not be the best fit. I’m often booked in advance, so if you’re planning a project, it’s best to get in touch early.
Who I write case studies for
I specialise in case study writing for service businesses across a wide range of industries. My portfolio includes case studies for a sales and leadership coach, a software company, a management accountant, and a dust extraction business.
Based in New Zealand, I work with service-based clients across the English-speaking world – especially in New Zealand, Australia, the UK, and the USA.
If you need to show, not just tell, why you’re the right choice, I can help.
“Cornelia’s work has enabled my business to accelerate, grow, and work with great target market clients”
“I’d previously worked with Cornelia over a decade ago when I was in a different business, and was always happy with her work. But when I heard about the great work she was doing around case studies, I knew I had to re-engage, as I needed to capture stories of my success with clients locally in New Zealand. I had good international case studies, but nothing NZ-specific.
The case studies that Cornelia wrote are in a format that’s easily digestible and readable, and that I can use in lots of different media. It’s also great how she collaborated with my graphic designer to really bring the stories to life and make them look world-class. I recently featured the case studies Cornelia created in a big presentation to a business association, and that resulted in obtaining a massive target market client.
Cornelia’s work has enabled my business to accelerate, grow, and work with great target market clients.
I’ve already recommended Cornelia to my clients – especially for case study writing. I was comfortable with Cornelia speaking directly to my clients on my case studies, as I know how she engages professionally with people, and she tailors her approach and preparation to whom she’s speaking with.
There are a number of reasons I’d recommend Cornelia. Number one: she’s the best I’ve ever worked with. Number two: her skill sets are massive. Number three: you get results. And number four: although her rate is high, it pays for itself. When you look at the end results there’s a solid return on investment.”
Jason Dinan, Executive Coaching and Consulting – https://excc.co.nz
See my words at work
Here’s a small selection of case studies I’ve worked on for clients:
You can also browse examples of my case study writing in my Portfolio – and read what clients say on my Testimonials page.
FAQs: Frequently asked questions about case study writing
What is case study writing?
Case study writing is the process of creating detailed, real-world stories that showcase how your business helped a specific client solve a problem or achieve results. It’s a powerful way to build trust and demonstrate credibility.
Why are case studies important in marketing?
Case studies build trust by showing real outcomes with real clients. They go beyond testimonials to provide proof of your expertise, making them a valuable tool for attracting new business.
What does a case study writer do?
A case study writer interviews your client, researches the background, and crafts a compelling story that highlights the challenge, solution, and results – all while reflecting your brand voice.
What makes a great case study?
A great case study is focused, specific, and client-centred. It clearly explains the problem, your solution, and the results – ideally using metrics, quotes, and a narrative structure.
Can you help with interviewing clients for case studies?
Yes. As a professional case study writer, I handle client interviews as part of the process. I make it easy and respectful for your clients, while gathering all the insights needed to write a strong case study.
Where can I use my case studies?
Case studies can be used on your website, in proposals, in social media posts, email campaigns, and even printed materials. They’re versatile, long-lasting marketing assets.
Prove your value. Win their trust.
If you want prospects to believe in your services, you need more than promises – you need proof.
Let’s create case studies that build trust, remove doubt, and make your sales conversations easier. Get in touch with me, Cornelia, and let’s get started.
