A repeatable case-study formula that turns past work into client-winning portfolio pieces — used by the top 1% of providers on MindHub.
Most marketing portfolios on MindHub look the same: a grid of logos, some thumbnails, a list of services. They don't win business. The top 1% use a different format — the case study — and they convert at 4× the rate.
Why logos don't win
A logo grid says "I've worked with these brands." It doesn't say "I produced these outcomes." Buyers want outcomes, not credentials. They want to know: if I hire this person, what will I get?
The case-study formula
Every case study on a winning portfolio follows the same 6-section structure. Keep it under 600 words.
1. The headline outcome (the hook)
"Took an Egyptian skincare brand from EGP 80k/month to EGP 600k/month in 7 months on a USD 8k retainer."
Specific. Quantified. Named domain. This is what the buyer skims first.
2. The starting point (the problem)
"Brand had a 1.1% conversion rate, CAC of EGP 380, and was running entirely on detailed-interest targeting. Inventory was sitting and ad fatigue was crushing creative."
Establish the gap. Without a clear problem, the solution has nothing to land on.
3. The strategy (the why)
"We rebuilt the account around 3 ad sets running broad with Advantage+ creative, set up Conversion API, and shifted 70% of creative spend to nano-creator UGC."
Two or three sentences. Don't explain everything. The buyer doesn't need your full playbook — they need to know you have one.
4. The execution (the what)
- 6 UGC videos per week from 4 nano creators
- CAPI implementation in week 1
- Account restructure from 14 ad sets to 3
- Weekly creative kill-and-launch on Friday afternoons
Use bullets. The buyer is scanning.
5. The result (the proof)
"Within 90 days: ROAS lifted from 1.6× to 4.2×. CAC dropped from EGP 380 to EGP 124. Monthly revenue scaled from EGP 80k to EGP 600k. Inventory turn doubled."
Always 3-4 numbers. Never one. Three numbers feels like a result; one feels like a fluke.
6. The takeaway (the credibility)
"This formula works for any DTC brand with at least EGP 30k/month in ad spend and a willingness to refresh creative weekly."
This positions you. It tells the next buyer who you're for — and quietly, who you're not for.
What makes a portfolio win
- 3-5 case studies maximum. Quality over quantity.
- Each one written in the same format. Consistency builds trust.
- Mix verticals. One DTC, one B2B, one service. Shows range.
- Lead with the strongest outcome, not the most recent.
What kills portfolios
- Vague client names ("a leading e-commerce brand") — use the real name with permission, or anonymise the brand but specify the vertical, geo, and size.
- Process screenshots ("our 12-step methodology") — buyers don't care.
- Generic stock thumbnails. Use actual creative from the campaign.
- More than 8 case studies. Decision fatigue kills conversion.
How to write a case study fast
Block 90 minutes. Pick your strongest past project. Pull the start metrics, end metrics, and 3 things you actually did. Write each section to its target length. Don't edit on the first pass. Edit on the second. You'll have a usable case study in 90 minutes.
How to get permission
Most clients will let you publish if you ask. Some will require anonymisation. A few will say no. The conversion impact of having published case studies is so massive that even 3 published-and-2-anonymised beats 5 anonymised.
Where to publish
- Your MindHub profile (case studies tab)
- Your personal/agency website
- LinkedIn carousels (one per case study, broken into 8 slides)
- Email signatures (link to your top one)
Final
A portfolio is a sales asset, not a vanity gallery. Build it for buyers, not for yourself. The case-study formula above takes 5-10 hours total to produce a winning portfolio. It's the highest-ROI work you can do as a provider.