Okay, maybe I am overthinking this, but I am working on the bow hold. How does the index finger come into play? I have watched the video numerous times, and the more I watch it, the more it gets confusing. The index presses downward on the down bow, and upward on the up bow. Right?? Then how do you get the pressure at the tip?? Or is it the opposite? Does the index press up on the down bow, and down on the up bow? Please help my aging mind to grasp this.