Google fish netting. I got mine from a place in Texas that sells many different kinds. Even for back stops foe golf driving ranges and tennis courts as examples. They sell it by the yard.
Take a look here:
PS: When you get done post the pictures on this Forum. AND remember DO NOT get close with the spray can when spraying on top of netting. If you get to close it will get under the net and you won'y see the pattern left by the net.