Feedback? Sure.
Your doubles don't look anything like your singles. While your doubles are very convincing, it's a give away that something is up, because that's the only time you handle the turn over that way.
The rocking back and forth from foot to foot is really distracting and makes you look super nervous. Plant your feet.
Personally I don't get the sense of "increased impossibility" from this. Without context of a script or knowledge of sleight of hand, no one is going to know that each way you're doing this is supposedly more difficult than the one before it. It just seems like you're taking a card and putting it into the middle, and then it's on top. Over, and over, and over.
You did have a tiny flash when you culled the queen.
CTM isn't nearly as effective in this kind of scenario. There's nothing to direct their attention to the card stuck in the fan, so your other hand leaving the frame just seems suspicious. I know it kills in person, but you're not in person here, you're on video, and it just telegraphs what you're doing.
Now, all that said - your sleights were on point. Your technical skill is clearly evident. You have tells not related to the sleights themselves, per se, but the execution of the moves is really good.
I think it is about twice as long as it should be, but then I'm not a big fan of lengthy ACRs. Personally, after maybe 5 times of the card appearing "at the top" in some way, I'm done. In my own routine, the 5th phase is the deck vanishing completely leaving the selection behind.