After a comment elsewhere that a British camouflage net should have strips of hessian in it, which I had considered but decided against because of the difficulty in weaving it through the mesh of the gauze bandage, I took the advice anyway and glued some strips to the net:

[ATTACH=full]145531[/ATTACH]

I just cut a strip, maybe 2 mm wide, from a paper handkerchief, peeled the layers apart and then cut one of those into different lengths. I then put each piece into some thin PVA glue, placed it on the net and pressed it in place with a stiff brush. Roughly three minutes' work, I guess