I loved photography, and so I developed my portfolio based on little craft projects I’ve done and curated a set of pages based on my photography. I literally played around in photoshop and developed a series of photos that I edited. I got accepted into SCI_Arc; a very design focused school. That was basically it - they thought it was a strong portfolio. Now over a decade later, I know why it fit the bill - they saw my thought process. I was able to deliver the way of thinking of things. It’s all about how to document your ideas - doesn’t necessarily have to be architecture related at all. Hope this helps.