Let’s talk about my background first.I used to be upward-pickslanting guitarist for a long time, however, its inevitable that it produces lots of noises from other strings and because of lack of awareness about palm-muting. After changing a new guitar teacher, he told me that my gesture was wrong and thus corrected my gesture so it became better.( may be because the old gesture so I could only adopt the upward-pickslanting position).
Nevertheless, the new teacher and old teacher also told me that the only way to build up picking technique is to use wrist motion but I got used to use arm for very long period and I feel very uncomfortable and create lots of tension by using wrist, so I am wondering if I keep using my method ( arm) or not? If I keep my gesture , how could I improve it ? How could I do better for palm-muting?
Here is the video , Hope that somebody could help me , I am really in a dilemma.