The first two really aren't good. I mean you put the card in the deck repeatedly then show us that it has come to the top, to be honest I think spectators would be more surprised if it wasn't on the top after those moves, it's just not even vaguely deceptive and i'm sure by watching the video you must know that.
There's also some other issues you need to address before refining these sleights, your card handling is full of tension and unnecessary riffling and messing with the deck. This looks very inelegant and will also make spectators think you're doing moves even when you aren't.
I don't mean to discourage you with this, but claiming everything is fine when it isn't would not be helpful for you. While unoriginal the one handed top change is a useful move and the fact that you came up with it by yourself is very promising. This idea may be worth pursuing even though it isn't original, maybe you can find some new applications for it? Unfortunately I believe the first two moves just aren't worth any more of your time.
