How to turn a couched corner

Jeanne of Just String has a great trick up her sleeve. She says,

When stitching a couched border such as this, you may face a dilemma because the couched thread ends in a hole at the corner and then has to come up in the same hole for the next side of the border. I’m not sure how other stitchers handle this problem but I use a very simple technique to turn these corners.

Go to her blog post to find out how she does it.