If it's the cloth kind of camo netting try liquid starch. Pour a little into a small container, put in the netting soak it good, ring it out the excess, and lay it down where you want it. When dry it will stiffen and stay where it was. It useally forms down right on the model. I never have had a problem if it gets on the model, drys clear and works like a matt finish.
If it's that plastic type of netting good luck.
And instead of buying it, some bandage material, and cheese cloth works pretty good. It's white but I lay it against some cardboard and spray paint it what colors you wish.
Hope this helps.
Bob