Up and down blanket stitch
Working from left to right, bring the needle and thread up on the baseline and take it down on the top line, leaving a loop on the surface.
Bring the needle up in the loop on the baseline and tighten the loop against the working thread.
Take the needle down further along the baseline ensuring to leave a gap of a threads thickness, draw the thread to the back leaving a loop on the surface.
Whilst the needle is still in the fabric, throw the surface loop over the needle
Repeat these steps again to produce a series of ‘Up and Down’ stitches evenly spaced to achieve an Up and Down Blanket stitch
Structure of stitch
Borders, edgings, outlines, couching.
Identifying Up and down blanket stitch
A continuous line of scallop looking Blanket stitches tied together in pairs
Each stitch should be a mirror image of the adjacent stitch
Betty Barnden, The Embroidery Stitch Bible (2003) , p.62