Please feel free to share. “Amazing Grace”
Looks like a good bow-hold to me! You may find you get better balance by extending your pinky. I am pretty sure mind ends up on the screw, and is pretty straight. I was taught to start just as you showed, holding it with the thumb and middle finger, and then letting the other fingers lay naturally, except extending the pinky onto the screw (or however far it goes when mostly straight) for the counterbalance.
Thanks for the replies. My question is does it really matter where the thumb is placed on the gap or leather as long as you are comfortable & hand is flexible?
I don't think so. The important thing is that the fingers should hold the frog securely and the pinky should be behind the frog. The recommendation to place the thumb in the gap is a good guideline for the average-sized hand.