Feed the doubled strand of yarn through the shed. (In these photos, it's the light blue one.) Let the loop end of the doubled strand hang out the left side of the shed by a couple inches. Leave its two long tails hanging out the right side.

Inside the shed, separate the two strands and beat them apart to snuggle up against the last needles. That doubled strand now resembles a letter C, with long tails extending to the right.

Take the near tail and feed it back through the shed alongside the far needle.

Then take the far tail and feed it back through the shed alongside the near needle. Instead of a letter C, you now have a flattened letter O with short tails hanging out the left side. There is one loop hanging out the left and two overlapping loops hanging out the right.

Now do one last row of twining, right down the middle. If Row B was your last row, do Row C. If Row C was your last row, now do Row B.

With the crochet hook, draw the other piece of weft through this last shed, centering the strand so its long tails extend in equal lengths out the right and left sides. In these photos, this is the red strand.

Remove all needles. Pull gently on the two overlapping loops on the right until the loop on the left snugs up against the sprang netting. (See green arrow in illustration.)

Then pull gently on the two short tails on the left until the two overlapping loops on the right snug up against the sprang netting.

If you are making a pouch:

Use the crochet hook to run a drawstring beside the far beam, inside the loops that are holding onto the beam.

Unfasten one end of the far beam from the cords attaching it to the frame. Slide the beam out of the loops of sprang.

Then use the crochet hook to feed one end of the drawstring through the loops on the near beam.

Untie the two slippery half hitches and knot them to neighboring strands, feeding their tails into the netting to hide.

Unfasten one end of the near beam from the cords attaching it to the frame and slide it out of the sprang netting.

Use the long tails from the central weft to sew up the sides of the bag.

(In these illustrations, the red central weft was cut too short.)

You can see a glimpse here of the blue weft of the flattened O, and a few red stitches going up the side seam.

This photo is from a bag with brown wefts, camouflaged among the brown netting strands.

The bottom of the pouch is formed by the central rows that were anchored by weft. The weft strands don't show up since it's a tight weave, but here you can see the straight middle row where a single strand of weft passed through the final shed. The rows above and below it now form a flattened O.

This 20-loop bag has a stable bottom and stretchy sides, just the right size to hold an apple for your lunch!