Your actual execution is not great but passable. I am seeing two major problems. One, as everyone has said, that grip looks unnatural in your hands. That's because (as we see here) your natural dealing grip is mechanics. I still would agree with everyone here that your better off just taking the set back in practice, and starting over with a mechanics bottom deal, however there is another option besides just ignoring it. Your other option is to change all your Other deals to erdnase grip, that way erdnase grip becomes more natural to your hand, and you don't have any inconsistencies when dealing. Second, I don't know if your learning this move for dealing or for magic, but either way you are seriously lacking in practice when it comes to switching in and out of bottoms. The thing's I immediately noticed: when you take the bottom card you speed up the deal, when you are doing a bottom your hands have a deeper inward tilt, your grip tightens before the deal, the sound of your tops and bottoms is significantly different, finally and most importantly, your don't have any right thumb pushover action when you deal from the bottom. You need to think about correcting each and every one of those inconsistencies, because as it is any one of those is a dead give away. Try listening to your video, eyes closed, you can hear when the bottoms come out. To correct all that stuff, it really is a personal game, but the most important thing to keep in mind is that you can alter your bottom to look like your natural, or you can alter your natural to look more like your bottom. Either way is valid. In my mind the actual execution of the deal is of lesser importance than hiding the action. If they don't even suspect your dealing is amiss in the first place, who the hell is gonna be watching the deck for falses?
