I made two more versions of the sunglasses case. The second one I made much bigger thinking that would be better for big sunglasses. As you can see, the large sunglasses fit without a problem. But, if you see it in person, it just seems too big. It measures about 4.25 inches by 8 inches.
The third case seems to be a pretty good size. My smaller sunglasses have plenty of room and the larger ones fit snugly inside. I'll probably post this case in my shop (if I can convince myself to give it up). I'll surely be making more sunglasses cases now that I have an acceptable pattern. I am still not sure what to do with the larger one, though. Maybe you could put a checkbook and pen inside? Maybe it will be a freebie? Any ideas?