It is a challenge that most of us have fought at one time or another. If you are serious about learning about Ameraucana, visit the gallery of all the approved varieties at http://www.ameraucana.org/gallery.html, study the SOP, visit some shows and see what the winning birds look like. Before long, you'll be on here giving the sad news to someone that, while their birds are pretty, they aren't Ameraucana. :)
Just like it takes more than thorns to make a rose bush, it takes more than muffs and beard to make a true Ameraucana.