What Exactly Is a Portfolio?
A portfolio is a collection of your own work — a showcase of what you've built. Designers and photographers have long used them, but they're now standard in the engineering and programming world too, thanks to platforms like GitHub, personal websites, and YouTube where anyone can publish publicly. Building 1–3 projects while you're still a teen gives you concrete material to explain yourself in recommendation-based admissions, AO admissions, and company internship applications.
A good portfolio doesn't just show the finished product — it explains "why you built it," "what you figured out along the way," and "what you'd improve next." Packaging the live URL, the GitHub code, screenshots, and a short write-up together makes it easy for anyone to understand at a glance.
Example 1: A Personal Introduction Site (HTML/CSS)
Simple is best for a first project. Build a single-page website with your name, hobbies, favorite books or music, and what you'd like to try in the future. It only requires HTML and CSS, and you can finish it in half a day to a full day.
All you need is HTML and CSS. Arrange four blocks — "Photo," "Favorites," "What I'm learning," and "Social links" — and you have a complete one-page site. GitHub Pages hosts it for free and gives you a URL, which means you can write "My homepage" on an admissions self-introduction sheet.
One important note: be careful not to include too much personal information on a public site. Stick to a nickname or handle, and limit what you share to your projects, what you're learning, and how to contact you. If you need to share more detail for an admissions application, prepare a separate limited-access document for that purpose.
Example 2: A Helpful Automation Script (Python)
The second project is "a small tool that makes your daily life a little easier." Common examples: a script that reads out the morning weather, a birthday reminder for classmates, or a tool that turns YouTube video titles into a vocabulary list. These are complete in 20–100 lines of Python.
The tech you need is Python plus libraries like requests and BeautifulSoup for pulling data from the internet. All of this is within reach by asking ChatGPT as you go. "I built it for myself" is a compelling story in any interview (see No.16).
Example 3: A Small Original App (Web or Game)
The third project is more substantial — pick a theme and build "your own app." Examples: an English vocabulary quiz app, a daily exercise tracker, a club schedule manager. Combining HTML, CSS, and JavaScript lets you build an app that runs in the browser.
The most important thing for the third project is that "someone you know can actually use it." Having family, friends, or clubmates use your app naturally surfaces bugs and improvement ideas. Saving photos of people using it or keeping feedback creates depth in your portfolio (see No.19).
Common Mistakes to Avoid
- Waiting until it's "more perfect" before publishing, and never publishing at all. Publishing at 80% completion and fixing it later is dramatically faster progress.
- Filling your portfolio with projects that are just copies of tutorials. Even one project with a personal idea of your own outweighs several clones.
- Being satisfied when it "works." Write down why you built it and where you got stuck — those details matter.
How Will This Help in the Future?
AO and recommendation-based university admissions increasingly prioritize evidence of "what you've actually done." A teen who can show even one programming project — regardless of arts or science track — has a real advantage. In IT internship applications, being asked for "your GitHub URL" as a submission is becoming standard.
Size matters less than completeness and how clearly you can explain it. A small, finished project with a clear purpose often communicates more than a large, unfinished one. Write a README covering how to use it, what tech it uses, and what challenged you — and keep the update date visible to show you've been learning consistently over time.
What You Can Do Starting Today
- Create a free GitHub Pages account.
- Build and publish a single HTML intro page (photo, name, favorites, social links).
- In about a month, add one Python automation tool you actually use.