Nails length affect picado posture, angle of attack and speed
https://youtu.be/NfSyCOFpf5M?t=14s
Superlative secrets on picado
https://youtu.be/jewga7jspyI?t=14s
Just need 2 things to learn https://youtu.be/1As8_P1JyF8?t=14s
Do it yourself...and be confused forever http://youtu.be/ThJmDE6fA9c?t=14s

Your habits on right hand placement
https://youtu.be/RIiUs9vJAo4?t=10m5s

^Ex.1/ 00:14 Buleria RD
Ex.2/ 01:09 solo 2 Pools
Ex.3/ 04:33 Alegrias
Ex.4/ 05:50 topic
*Ex.5/ 09:49 sanding nails
Ex.6/ 12:11 sanding thumb
Ex.7/ 13:45 left hand length
^Ex.8/ 14:56 solo 2

Nails length affect picado posture, angle of attack and speed
https://youtu.be/NfSyCOFpf5M?t=14s

How Paco de Lucia sanded his fingernails