Step 1
Use the pencil to poke a hole through the centre of the square and wiggle it about so it loosens the weave of the hessian.
Step 2
Take ONE end of a fabric strip and push this halfway through the hole.
Step 3
Use the pencil/proddy to make another hole, no more than a finger’s width away from the first. Wiggle the pencil around to stretch the weave.
Step 4
Take the one end of the SAME piece of fabric and pull this part way through the hole so the two tufts of the SAME fabric are showing on one side.
Step 5
Grab the two tufts and gently tug them at the same time so the fabric on the other side of the hessian is flat.