Gethsemane I only want to say cover

Hi my name is Phil from the Uk, this is a cover of Gethsemane I only want to say from Jesus superstar musical, I love songs that have high notes, especially in this song as my voice tends to lean in that direction. in this cover I try to manufacture a fake operatic chest voice why cause my natural tone is a lot lighter and airy than this if anyone can tell me how I can normalize this type of sound so I'm able to pass through bridges a lot easier, would be great.

cheers