Looking for advice here from the seasoned pros or skilled starters. Although not ordinarily subject to stage fright, I'm facing the challenge of competing in a state championship "Old Time Vocal" competition. Choosing to go a capella, I notice my lack of breath control is pretty obvious. Nervousness will probably make it worse when I compete, particularly on the lower notes I don't project well. What to do? Singing has always come pretty easily for me, so I've never been meticulous about diaphagmatic breathing (WARNING: this led to nodes on my vocal chords, which required tedious treatment and robbed me of some smoothness and range. Don't let this happen to you. Learn to sing properly!)Any warm-ups, exercises or diversionary tactics you can recommend?