No worries @vnjksnv, thanks for sharing.
Some updates.
I’m working through the test drive lesson, and it’s very helpful. @Johannes Troy mentions that a good reverse-dart-thrower motion feels like scratching off a lottery ticket. That helped improve my tremolo.
I also am incorporating my elbow for faster tremolos. Feels like an improvement.
Finally, I realized my tremolos can be sped up by having a smaller range of motion.
I’m focusing on my tremolo on one string right now. My upward pick stroke still feels like it’s getting caught sometimes. I’ll have more videos soon.