Crathorne Bug - continuing trailing, and corners

At the end of the line, take the core thread through to the back of the work.

Then bring the core thread up at the beginning of the next line, and continue trailing.

Close up

Corner - Take the core thread down through the fabric at the end of the line.

Then bring the the core thread up at the beginning of the next line at the corner, and continue trailing as before.

Trail over the trailing, at the corner to produce a crossed corner.