When we recite the sutra we should keep in mind five rules for our recitation:

1. Vocal clarity
2. Phrase-by-phrase clarity
3. Fluency
4. Noble-mindedness
5. Solemnity and propriety.

There are also three cautions:

1. Mindful we are before the gods and Buddhas
2. Pray to placate even the spirits of darkness
3. Pray to move and delight the people.

When we are in community reciting the sutra, it is said we should do so by the ear. For anyone who has either sung in a choir or played a musical instrument in a band you understand the importance of listening to those around you so that your playing or singing is not just in time or in harmony, but it is also appropriately loud or soft. When we recite in community we are instructed to set aside our personal manner of recitation and concentrate on harmonizing with others. In that way we are all able to enjoy the flavor of the Dharma together.

Daily practice is important as this ensures you gain proficiency in correctly pronouncing the words, adjusting your pace of speaking and tonal quality. In all of this seek to find your own natural style when by yourself. You should not force yourself to be overly ostentatious in your manner of service. If you do not naturally have a deep voice, then do not try to force your voice deeper. I will say, however, that daily practice can help improve your range of voice, which will enable you to better harmonize when in a group setting.