G'day mate,
Yes as Dmd says, this is the best way . Get in a pharmacy and ask'em different types of these tissues. I always use these.
If u prefere something aftermarket, Verlinden, Techstar Acessories and Custom Dioramics also have these camo nets. But i still the best way is u get'em from a pharmacy.
Thus u'll have many choices of shapes.
HTH