About

The copywriter behind the conversions.

I'm Pieter Koorsen. I write direct response copy for DTC supplement and ecom brands that need their traffic to do more than just show up.

I didn't start in a corner office. I started in the trenches.

My first years in this industry were spent producing and editing video sales letters. Not writing them. Producing them. I sat in the edit bay, watched hundreds of hours of VSL footage, and learned what held attention and what lost it. Frame by frame. Scene by scene. That production background changed how I think about copy forever.

When I moved into copywriting full-time, I brought that perspective with me. I don't just write words on a page. I write scripts that survive the edit. Advertorials that hold attention past the first scroll. Sales pages where every section earns the next section.

Today I work exclusively with DTC supplement and ecom brands. The kind of businesses where copy doesn't get to hide behind brand awareness. It either converts or it doesn't. That pressure is where I do my best work.

Training & Method

RMBC isn't a buzzword. It's how every project gets built.

I trained under Stefan Georgi, creator of the RMBC method. Research, Mechanism, Brief, Copy. It's the framework behind some of the highest-grossing direct response campaigns in the health and supplement space. And it's the backbone of everything I write.

I also studied under Jon Benson, the pioneer of the video sales letter format. Between Georgi's strategic framework and Benson's VSL architecture, I work from a foundation that's been responsible for hundreds of millions in tracked revenue.

But frameworks only matter if you back them with real market research. Before I write a single headline, I've already pulled apart your customer reviews, competitor claims, objection patterns, and the emotional triggers that actually drive purchases in your category. That research phase is non-negotiable. It's also where most copywriters cut corners.

Experience

Where the numbers come from.

For five years, I wrote copy for a ClickBank Diamond-tier vendor generating $65M+ in annual revenue. At that scale, you learn fast what works and what doesn't. Every headline gets split-tested. Every hook gets measured. There's no room for guesswork when the ad spend is that high.

That experience gave me something most freelance copywriters don't have: a gut feel for performance backed by tens of thousands of data points. I know what a winning lead looks like before the test results come in. Not because I'm psychic, but because I've seen the patterns play out at scale.

On Upwork, I've completed 100+ projects with a five-star average across DTC, supplement, and ecom clients. That track record isn't built on charm. It's built on copy that performs, delivered on time, with clear communication throughout the process.

What I Believe

Copy is a conversion tool. Not a creative exercise.

I believe the best copy is invisible. The reader doesn't notice the writing. They notice the problem you've described. They notice the mechanism you've revealed. They notice the offer that feels too good to pass up. The copy itself just disappears into the experience.

I believe research beats talent. A mediocre writer with great research will outperform a brilliant writer who skips it. Every time. That's why I spend more time on research than most copywriters spend on the entire project.

I believe compliance isn't a limitation. It's a competitive advantage. If you can write copy that converts AND passes compliance, you've just eliminated 80% of your competition. I write for platforms that enforce rules, so every piece of copy I deliver is built to run.

Ready to fix the copy gap in your funnel?

Book a free strategy call. I'll look at what you're running and tell you exactly where the copy is leaving money on the table.

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