Tips to improve voice:

‘SING’! Sing as much as you can! Sing until you hit the exact note after striking a chord on piano.

Avoid heavy foodstuffs, particularly dairy products and thick drinks a couple of days before any performance.
Water, is what you need to drink all the time. If it is lukewarm the better. In addition to that too spicy or oil or even sour food can affect your voice box.

Some the exercises you can do to improve your breathing are inhaling for a single count and exhaling for 2 and slowly increase it, taking a big breath and blowing as hard as you can, as a superhero would to blow a huge fire and even plain deep breathing will go a long way in getting the best of your voice

If you really want to know how to improve singing voice quality, it is extremely important that you are relaxed and warm up before a performance. Never start a song directly without warming up, which includes deep breathing and relaxing your body to gear up for the performance. Proceed to light humming from there and gauging the scale once you are ready. As far as possible avoid singing on the top of your volume and straining your vocal chords.

The Voice

I want a beautiful voice

For singing

That when I sing, I touch the heart.

Until it reaches your soul.

Until it goes deeper and deeper

Until you feel my song.

For speaking

That when I speak, you listen.

Until you learn.

Until you understand.

Until you live by the words I said.

I want a beautiful voice

That can be heard without speaking.

I want you to listen until you hear what I haven’t said.

Until you know the words that I can’t say.

Until you know me.  

Until you understand the real me.