For Fans of Flatpicking Guitar Magazine
Holding the pick has to be the most fundamental starting point after taking the pick out of the box and tuning up. (If you store your pick by threading it between the strings, be sure to remove it before tuning up).
I have spent the last few weeks struggling with picks that keep twisting as I am playing, which makes it difficult to play with confidence.
Fortunately (maybe) I came across an instructional video by Scott Fore on blessi.com. Along with this there is a video of Scott playing Ragtime Annie which is tremendously inspiring.
In the instructional video, Scott shows how to hold the pick. Most importantly, he says that the pick should strike the string at a 45 degree angle (not at an angle where the front of the pick hits the string! This produces a raspy sound on wound string) but where the pick is square to string but at a 45 degree angle to the top. This allows the pick to get off the string quickly. To do this it is necessary to push with the thumb on the downstroke and push with the forefinger on the upstroke. This seems to me to make perfect sense. The catch is, that in order for the pick to bend enough, aside from using paper-thin picks, the finger which is not pushing has to be supporting the pick very loosely. This will obviously require considerable practice. Holding the pick loosely also improves the cadence greatly and probably prevents a sore wrist.
I have been trying to hold the pick back toward the first thumb joint. This seems to give more torque with less effort. Moving the forefinger down and back puts more meat on the pick and should tend to hold it steady. I recently realized that if I move the forefinger so it is in the centre of the pick it is better balanced and does not twist any more. This means that I can only move the pick back until it is uncomfortable to place the forefinger in its center. It is likely possible to practice moving the pick back and getting your forefinger used to curling even further, but this may not be worthwhile.
I have now gone back to a normal pick but it is between light and medium while I try to get used to holding it loosely. It seems to be a matter of balance. This I estimate will take six months as I try to graduate to a full medium pick.
The above seems to make sense to me. I wish there was an instructional video which either confirmed this or presented something better. If you decide to try this, remember that I know less about this than you do!