I'm not usually one for making elaborate backs, but as I initially was planning to make the quilt bigger I had all these cut strips and it would have been a shame not to use them.
As you can see on this close up, I quilted it with a wavy stitch line diagonally both ways. So easy and fast to do. If you ever need to finish a quilt in a hurry I recommend that you try this. So much easier than stitch in the ditch or any other straight stitch. And I think it's looking quite good!