Dart Thrower Picking Motion

Playing Technique
#1

Greetings everyone!!

I have a question regarding Troy’s video on Dart Thrower Picking Motion.

At 20:47, Troy says that if you rotate the hand the other way, it’s not usable.

I think I might be doing that — I can tremolo pick fast, but it doesn’t seem to work for downpicking in James Hetfield’s style.

Here are two videos of me playing:

https://www.youtube.com/shorts/6Mm59wCOyyw

https://www.youtube.com/shorts/ydkRzL4jL1U

If you can help me understand what I’m doing, I’d be eternally grateful.

Thanks in advance!