Is there any free vocal power exercise ?

yup you can catch up with some good karaoke to build up your vocals which you can download from www.isohunt.com

Thanks a lot.

:)
:)

vocal power is about pressure from the diaphram (try flexing when you are going for that big note)
and placement feel for the vibrations they will be in a different place for different sounds aaaa for example might be foward front teeth
oooo might be just under the nose
look for theese and experement with how you shape your throat and mouth until you find your power and tone

Thanks a lot my friend. The problem i have now is i can't sing better not like before my voice is flexible, i think i might do to much of vocal exercise that's why i might damage the vocal cord.

sustaining the notes and holding breath veryfirst u have to warm up complet body u shuld be aleart and and flow ur energy throug voice and have control over it enjoy