hello thompson,
i read a review a while back and found it worked quite well.buy a bag of steel wool,available at most hardware stores.tear off peices the size you need and stretch and shape.next,spray or airbrush a shade of brown.when dry cover with spray adhesive and sprinkle on parsley,oragano or any spice with a leafy look.again after drying,spray with the colour of green you want the bush to be.
this works quite well and i hope it helps.
parrot.