Hold in hand such that the clapper loop is pointed downward, and the 8 strands are draped over the hand.
Tie a loose Wall knot, where each strand end is passed around and underneath the next strand end.Take the first strand end and pass it under the second strand end in a counterclockwise direction, leaving a bight.
Take the second strand end around and under the first strand end, then take it under the third strand end, leaving a bight.
Continue around in the same manner until you get the the last (8th) strand end. Pass the 8th strand end up through the bight formed with the first strand end.
The completed Wall knot set-up should look like this.
If you were to tighten all 8 strand ends, you would have a completed Wall knot.
Moving on to the Matthew Walker, take the first strand end around the Wall knot in a counterclockwise direction, then tuck it up through the bight from which the next strand end exits.
As you can see, the first strand end (green) and the second strand end (yellow) both exit through the same bight at the bottom of the picture. Don’t cross the first strand end over the second strand end.
Continue around the Wall knot, passing the second strand end up through the bight from which the next strand end exits. Then the 3rd, 4th, 5th, etc….