Your Portfolio: What Do You Have to Show at 18?

⚠️ Version note: the platforms named here (GitHub Pages, Notion, Google Sites, Behance) change their interfaces regularly. The steps describe what to look for. Last checked: 24 July 2026.

A CV claims. A portfolio proves.

A CV says "I built a data pipeline." Anyone can type that sentence. A portfolio says "here is the data pipeline, here is what it does, here is the code" — and the difference between those two is the difference between being believed and being tested.

At 18 you're competing partly against people with more experience. A portfolio is how you win anyway, because it moves the conversation from what you claim you can do to what you have already done. The second is much harder to argue with, and much rarer than it should be — most people never make one.

Here is the thing people get wrong and it's worth saying up front: you already have the material. A course project. A thing you built to solve your own problem. An analysis you did for a society. The portfolio is not "go and produce impressive work" — it's "show the work you already did, properly."

What you'll have at the end

• A published, linkable page — a URL you can put on a CV and in an email
• Three pieces, each with a short write-up that explains itself
• The write-up structure that turns "a thing I made" into evidence of how you think

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Before building anything, inventory. Most people undercount badly.

List everything you've made that has an output:

• Course projects with a result — the essay that got a high mark, the coding assignment, the analysis
• Anything you built for yourself — a script, a spreadsheet system, a small tool, a website
• Work for a club, society, team, family business — a budget, a poster series, an event you organised
• Things you made while learning — the lesson outputs from this very platform count
• Writing, if it's relevant — a blog post, a well-argued piece, documentation

The bar is not "impressive". The bar is "real and finished". A small thing you actually completed and can explain beats an ambitious thing that's half-done and unexplainable.

Pick your three strongest. Fewer, better. A portfolio of three well-documented pieces beats ten thin ones — and a reviewer will only look at two or three anyway.

✅ Check: three real, finished pieces chosen, each with something you can point at.

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