Just be consistent. I am a terrible referee, but i am consistently terrible.
If you call a charge or three in the key down one end you have to call it down the other.

The other thing is, when you come across a guy with a huge ego, like myself, make sure you let them know who's boss. They'll try and run you ragged if you dont. Same goes for coaches, if they mouth off to you let them know who's calling the shots. I know a ref whos stare managed to shut me up. And believe me that is something.

Other than that not much to say, because like i said i can't ref for shit, but good luck with it