if the artifical head is done right the feathers will not have to be replaced. they will be on the form when it is removed from the cast block.

I always made my own molds and poured my own heads.that way the hairs and little feathers will come out of the mold on the head.

I have a book that taught me the waty to do this,I will look it up and post the name in a day or two.

my suggestion would be to show your coustomer a freezed dried head and a latex poured one.then let him make up his own mind.I agree that most of the artifical haeds I have saw don't look real[&:]. you can pour 2 sometimes 3 heads from one form befor all the feathers and hairs are gone from the form.
It is really not hard to make a mold and pour your own.it will be worth you while to learn to pour your own.it's easy and a lot of fun.as I said the little feathers and all the hairs will come off with the head when removed from the mold.
good luck with you schooling,I just wish I could still do my taxie work.