I want to mount one of the blue grouse I killed on my elk hunt and although it was killed in the fall, I want to mount it displaying. I can not find a resource on how to do the air sacks. My plan, if I can't find some instruction, is to purchase artificial ones as reference and model foam ones to place on the neck. Use Apoxie-Sculpt to make the texture, paint, install when I mount it and pin and card the feathers around it to dry to expose the air sacks. I might just use the artificial ones. Is there more to it than that?