Je crois qu'il faut aller vers ce qui te parait confortable. Il y a plusieurs écoles. De mon point de vue, c'est important d'essayer les choses et de se remettre en question, d'imiter les "grands" (avec les vidéos, c'est une grande ressource disponible) pour au final trouver sa propre façon de faire. Parce qu'on veut bien faire, mais on ne se destine pas non plus à une grande carrière de guitariste (du moins pour ma part), et il faut savoir relativiser (et explorer).
Un prof d'expérience peut aussi peut t'aider avec ce genre de détails, et chaque prof peut avoir sa façon de voir les choses (et t'apporter qquchose de différent).
En attendant une réponse plus précise, tu as des infos intéressantes ici (même si ça concerne d'abord la guitare classique) :
Citation:
Right hand wrist/hand position
There is a lot of freedom in the positioning of the right hand, which affects the angle at which the fingers will attack the string. Guitarists spend a lot of time finding their own individual positions (as there can be more than one) that allow the fingers/nails to pluck the strings with
a beautiful tone (possibly variations of tone with different positions)
a minimum of tension in fingers, wrist, or forearm
a healthy position (without strain)
The hand's position is influenced by the arm:
changing where the right arm rests on the guitar (either more to the left or more to the right):
This can be very helpful when changing timbre from near the bridge to closer to the fretboard
changing what part of the right arm rests on the guitar (either)
The hand can be varied in the following ways:
the height (bending) of the wrist, although (note that the more the wrist is bent, the more strain is placed upon it. This can informally lead to wrist injuries)
bending of hand to the left or right from the wrist (this is usually considered a strain, and today many guitarist hold the hand almost straight compared to the arm)
the rotation of the hand (it can be rolled to the left or to the right. Often guitarist might occasionally roll the hand slightly to the right - opening up the hand and changing the angle of plucking; whilst others might generally use an open position with the hand rolled slightly to the right)
http://en.wikipedia.org/wiki/C(...)nique