I have a rooster than needs to go. I was wanting to take him to a butcher since I've never done it before, so i can watch on the actual killing part. Im a little concerned that i am going to do it wrong. But i cant find a butcher. So i figured i would try the cone method. Is it possible to mess up cutting the neck? Is there a special knife i need to use? Any advice for a first timer would be appreciated!