Your feathers look fine to me. There is no "right" way to do them, but there are several ways you can use, depending on preference.
This tutorial is good
http://www.quiltingboard.com/t-21349-1.htm
I found it a good way and easy.
Just recently I bought a book which is good, and the method is easy
http://www.quiltingboard.com/t-36855-1.htm