[Callers] Microphones and/or technique for a deep voice.

I am a new caller, and I have called two dances. The first, I completely blew the microphone part. Since then, I practiced holding the mic close to my mouth like was suggested to me. The second dnce, I was told that my voice was too deep for the microphone, and I was overpowering it. It was suggested that I hold the microphone further away and project, which I tried, but again, not something I practiced. Someone afterwards suggested that it could have been dealt with by the sound board. Although, the sound guy was sitting there and I'm sure would have done something if it would have helped. So, any advice? Is there a particular mic or mic type that is good for deep voices? Any techniques to practice? Sound guy/gal need to be on the ball? Any advice welcome. ... Darwin