How do you guys do it? Do you guys move around or shadowbox to make yourself loose? Or do you just sit there and listen to music? In my case, before my exhibition bout and my very first match, I was walking around and doing(or trying) some shadowbxing.
to be nervous is quite normal, especially before a fight, instead of trying to deal with it why not embrace it and use it to your advantage, your nervousnes will allow you to be cautious which in boxing might help you keep the defense a little tighter? as you fight more and you will notice the nerves become more calm as you are used to the situation
That's what I do. I try to get in the ring before the other guy and just move around and make myself feel like this is where I belong. I throw punches in the air and just tell myself that the guy I'm sparring isn't anything special even though I know he is
Experience will help with the nervousness. Also, control your breathing, take calm breaths. Try not to breath fast, breath slow with an occasional deep breath.