Listen to everything around you and memorize the sounds of the physical world. Always have a recorder and camera with you. Think about how and why things behave the way they do. And you better really like putting in long hours, because you're going to be putting in some really fucking long hours if you want to make sound and music for a living.
There´s nothing special about this - it´s only at least 30 years old bus stop booth hit several times with a fist during few minutes of waiting for a ride home. What else would you do, having a microphone in your pocket ? Tweaked for a while in Kontakt and here you are... have fun :)
A quick look at how Blakus made his orchestral music by walking through his mockup of Hans Zimmer's/John Powell's Kung Fu Panda theme.