Remember, this is not an immediate quick fix. I will post some videos.
pause the video at 31 seconds. look at the position oswalt is in. He gets pretty good extension of his drive leg, his chest is facing third and his belt buckle is facing home. That is the separation of the hips and the shoulders.
you want to lead with you hips and ride those down the mound, keeping your front foot and lead leg closed for as long as possible.
At the last moment, you want to ROTATE hard off the rubber while keeping your shoulders closed. Again, never push off the rubber. that will create a disconnection in your mechanics. IT is an explosive rotation.
Look at 10-14 seconds in the video above. Watch how felix rotates his drive leg at the last moment. Then pause at 14 seconds. His chest is still facing third base, his belt buckle is facing home.
Again, i am breaking this down in simplest terms possible to explain it.
are you getting it? let me know