Project your voice into the center of the microphone when singing. Most microphones have a cardioid pickup pattern, which means that they pick up sound from the front of the microphone, but reject sound from the sides and back of the microphone.
Place the microphone close to your mouth to emphasize the low frequencies in your voice. Place the microphone farther away from your mouth to de-emphasize the lows and thin out your voice. Experiment to find the most appropriate distance for your voice.
Move the microphone closer to your mouth when singing quieter passages and farther away from your mouth when singing louder passages. This will help compensate for the volume differences in these passages. Be careful not to move the microphone too far away when singing, as the microphone will be unable to effectively capture your voice beyond a certain distance. Experiment to find what works best for your style of singing.
Keep the microphone at a consistent distance from your mouth when moving around, if possible. This will help deliver an even-sounding performance. Accidental movement of the microphone closer to and farther away from your mouth or off to the side can cause noticeable changes in volume and tonality.