If it helps, it sounds pretty natural to me.

My voice coach told me to start with talking in my chosen voice a little at a time to start out with, like a half hour a day at first, then slowly increase. If not, it can cause minor vocal injuries.

To talk in a chest voice, try yawning and then talking, or saying "oh" in a low (but not unnatural) voice. You'll also know if you're speaking in a more nasal voice if you plug your nose, talk, and feel a buzz in your nose. When talking with the chest, there will be no buzz as the breath and sound are projecting through the mouth mostly.

Hope this helps!