I would not do a wavy/serpentine line of quilting when all the other lines are angular. I was at a loss for how to finish quilting an I Spy quilt, after I had done a huge zig-zag pattern in the sashing. I can't remember what I had planned, but by the time I had done the first block, I decided I'd never get it finished if I continued with that plan. I didn't want to rip out all the quilting on the sashing, so I ripped out that on the one block and went to plan B.
I'm not crazy about how it turned out, but it's usable, it will stay together through washing and the kid who gets it will not notice (it's a donation quilt). I used blending colors, so that the quilting did not stand out. I'm just glad it's finished.
I don't have a photo of the finished quilt, but just did a quicky photo. You can't see the stitching on the black sashing, but it's pretty much the same. It just goes back and forth edge to edge in the sashing in a large zig-zag. It would echo the quilting you've already done (more or less) and be quick.
bkay
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