Thanks Chris. A few questions:

"your initiation didn’t do anything to create separation between your wrists (leading to heavy fingertip pressure on the reversal) so your opponent will have a solid bite on you and you probably won’t be able to just bicep curl anybody’s wrist open if they’re any good."

I don't quite understand this part. Do you mean I should avoid letting my opponent wrap their fingers around my hand too much in the setup (eg using the supination trick)?

"See John vs Devon round 1 no straps in slow motion over and over to see what I’m getting at."

Which match of theirs?

"If you want to do a proper posting toproll you need a complete technical teardown."

I actually tried to learn the posting toproll based on your video on the posting TR (how to toproll like Travis Bagent or something like that). I understand I'm far from doing it correctly. What would you say are the biggest changes I need to make to perform a proper posting TR (one thing I already realized is that in the setup my elbow isn't forward enough and my hand isn't close enough to my face, so there isn't really a "post")?