What should the angle be on the left (fretting) hand? I've heard perpendicular to the fingerboard, but my hand is too small to do that effectively. I can still get one finger per fret but it involves minor motions. My teacher really never taught me a proper technique in terms of the technical stuff, just taught me one finger per fret. Also i've notice that my 1st and 3rd fingers are considerably stronger than my 2nd and 4th ( 2nd and fourth being middle and pinky) Tryin to fix it! Any advice??