Well, this isn't exactly what I intended for the design, but I have a good idea of how to proceed:
It started out as a small repeatable square:
Which was connected into four squares:
I wanted to put an edging around the repeatable squares but was having trouble coming up with something that would fit. My goal is to make the edging repeatable, so that it will work with any amount of squares. Unfortunately, my first attempt (pictured at the top of this post) will only work with a sequence of four squares.
After that attempt, I looked through a few of Jan Stawasz's patterns and realized that I could make the edging from a mirror image of what was happening in the square pattern. I've got it all figured out on my iPad, but nothing to show just yet. Actually, while I was piecing things together, I stumbled upon another repeatable square, which I've been distracted by:
All of these designs are a continuation of the triangle theme that I've been posting about. I didn't realize how many paths this would take me down...this will easily keep me busy for the rest of the year!