I just love the idea of making it look like a window--I see some of these in my future!
I didn't want to detract from the panel, so rather than any intricate quilting, I just did diagonal lines across the "panes."
Of course, I had to add a little detail in the borders...
This next one is called Southwest Desert View. I love the colors, but then its mostly orange and I LOVE orange!
As you can see, the "panes" got the same treatment, but I played in that outside border with gold thread. I did some quilting to mimic the diamond patterns.