Art. Half of Half of Half

This was probably the first painting that I produced. I didn't have a clue how to paint, let alone what to paint so I thought I'd keep it simple and just have a bit of fun experimenting with colour and do a simple shape.
Eventually, I started it and after a night of just painting the canvas a bunch of times and streaking it with contrasting colour while one layer was still wet. I just enjoying this process but had no idea what to do next. I ended up masking out the square shape and sort of worked out a pattern that was sort of half of it's shape multiplied.
I did a whole series of painting like these and gave them to friends but for some reason I'm incredibly fond of this piece. Perhaps because it was my first, the simplicity or just the slab of colours?