how can i improve my voice and reaching the highest pitch when am singing?

Answer 1

There is an exercise called the lip whistle. Purse your lips together and blow, sort of like a kid making motorboat noises (pppp) while making a tone in your throat. When you can do this well, go up and down the scale while doing it, and keep going higher and higher. You can go higher than you can usually sing, but after awhile, you will be able to sing that high.

Answer 2

Hi there.
Supporting the air in your chest is important.
Sometimes bending your knees helps. Also deep breathing (you know you are breathing correctly if your shoulders don't rise and your abdomen pooches out when you take a breath).
Vocal ease are important as well as dropping your jaw so the notes sound clear.
Good luck.