Hello
re what Alexander said - yes the gauze is a bit large for for most 1/72 scale camo nets, if you have it spread out, folded up looks better. In WW2 some camo nets had larger 'squares' than others.
Possibly the material Alexander mentioned is 'Tulle'.
You can buy this stuff cheaply from anywhere that sells material. It has small scale squares, (also makes good scale chain link fencing wire).
Not sure if it will do the job, but places that sell material and fabrics have other similar 'netting' type material that may be better
I used some of this 'Tulle' as netting that was in Phanomen Granit ambulances, below is an in progress build of a 1/72 scale Granit, with netting in place on the inside of the windows, prior to attaching the roof
for the model I placed the material 'diagonally' rather than square as this is how it appears in wartime photos in these vehicles
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good luck
cheers
Neil