it's me again !
I was quite happy with my technique after the comment you made on my video so i started praticising a lot... But while experimenting a little bit, i found that my pick motion (and therefore my wrist motion was maybe not optimal...as a picture is worth a thousand words :
Both movement come from the wrist, in the first one (the one i use) the wrist has more of a planar motion (just up and down) and in the second one (with wich i can acheive a better volume and a more "dry" sound (claquant in french) but is less natural) the wrist has a circular motion...
I was wondering what you think about that ...
Thanks and sorry for asking too much questions
Edit : i figured that in the second motion, the upstroke are easier