Bias on the Bottom

I have finally finished the Whirligigs quilt top!  I still have to sandwich/pin/quilt yet.  But slow but sure wins the race, and finishes quilts.  Here's how it looks:

I put a small HST in each corner as a little accent, but it's hard to see.  The Delectable Mountains border turned out really well.  I was worried that they would stretch out when I sewed them on, but I remembered my rule:  "Bias on the bottom."  When you sew, it works better if you put the stretchy(ier) part on the bottom, and the strip of plain border on top.  The pressure foot pushes along against the top piece, but if there's no bias or seam, there is no stretch. The teeth underneath just grab the fabric and move it along and it all goes together beautifully.  That little rule made the difference is sewing that border.