I think you are not putting the parts together right. This pattern is making the flying geese block on the sides. Here is a pic how to put them together. I hope it helps.
Personally I like the way Eleanor Burns does flying geese. Here is a pattern with the instructions on how to do it her way. Of course it is easier to do them using her ruler.
http://www.quiltinaday.com/freepatte...Crossroads.pdf
Good luck and let us know how it works out.