@Esemplastc i think if just add more strings to the outermost larks head knot. Like she adds one extra, but you could add two or three extra strings and it might work. I'll try it out and let you know if it works.
I'm a little confused. Would we still be able to make a shape even if we could fit 20 base strings? Or does it have to be reduced from the original number to make the shape? And for the first row are you tying three base strings together on each side? Or is it tie two together for the first row?