Alright, here's a quick little ear modeling tutorial. There are a million ways to model an ear. I've done probably 8 different approaches so far, haha, but well... this one is a funny one as it shows how easy it can be to start off an ear. There can be many different styles of ears, just like anything else about a human face, the variations appear endless. This is however a good start and shows where you can take it to. In the near future I will see that I record voice for it, too. Whereby I'm thinking about making a complete tutorial in a bit of a commercial fashion, if that was welcome. These little things don't take much time, but what I'm thinking of will be a real little enterprise.
Anyway, have fun with that and I hope you can get something out of it. :o)