Train chest at full potency? or try to make it more light?

Hello
i have a question about how to train the chest voice 'AH!' ... i need to put all the power that Ken puts? or i can train it more softty? ... when i try to do the same way i just scream (even in the mid-range)

Comments
https://soundcloud.com/walter-melo-455840247
When I clicked on your link, it said "Nothing to hear here"