In the winter of 83', I spent a great deal of time with Jeff Newman on the topic, and art, of properly shaping a finger pick.
There has been plenty of good advice, on other topic threads, from fellow Forum-ites, but, the one thing that I've noticed a neglect of - is in the relating of the 'back taper' process.
With the aid of the photos (below), I hope that a few of you might benefit, in your struggle to achieve a decent fitting, and feeling, finger-pick of the straight band variety. (National, Kyser, JF, Diamond Ring, etc...)
*This is cross-posted from my FaceBook page, for the folks who don't subscribe. > https://www.facebook.com/media/set/?set ... 812&type=3

These are the bend points. Adjust according to the size of your finger. Mine are sorta small.

In the beginning, the pick will be a sort of a rectangular shape. I usually put the overlap on the index towards the right, and middle finger pick overlap, to the left.

This shows the typically 'un-stated' portion of shaping a finger pick. If you gently pull back on the tangs, they'll form a more natural taper, like your finger.

A 'shaped' finger pick, ready to go... (middle) Notice the slight backward angle of the bands.