I was so mesmerized by how this design was stitching out that I didn't realize I'd forgotten to record a snippet of the stitch path until I was on the last row! Oops! The video of the final row stitch-out is available at the top of this post.

What I really like to show in the videos is how any backtracking happens. As a designer, I try not to use backtracking too much, but it's also unavoidable at times. So, yes, there is some backtracking in this design, but it's not too intense. If it helps me accomplish a pretty result? Sign me up! I'm okay with that.

The upside-down clamshells are staggered a bit—one higher than the other on the repeat—so that you can set it up on your computer without offsetting. Once the rows are placed, you'll want to nest the rows closely, but they shouldn't touch. The space between the rows will give a little bit of margin and help hide any inconsistencies during realignment. It needs to be close, but placement does not have to perfectly meet the prior ro...