I thought I would be clever and include a little twist to my piano key border by adding a 2' by 2 1/2'  strip to the top of each 2 1/2" by 5 1/2" 'key'.  That sewed up really quickly, and I was congratulating myself on doing something a little different...when I came to a screaming halt at the corners.

I hadn't worked out what to do when the little bits met, because I'd need a 2' square to make the border turn the corner....hmmm.

I often just run the border off the side in a butt joint, but that didn't look very nice with this configuration of strips, so I had to figure out a little block in keeping with the look of the rest of the piecing.

Back to the piles of green still on the cutting table, new 2" strips cut, and I had this little filler block whipped up.

 Then off to the sewing machine to get these borders sewn on; photos of the finished top in the next post....
.