Andy,
First off, I liked it. Having you considered moving your hand while you make the card rise to hide finger movement?
Also, closing the deck after inserting the card needs a little bit of work, your left hand does a little dance, then stays there while your right hand hesitates and fumbles at the back, before your left hand moves away again. Now, from the moment you close the deck, it is already square. So, by the time your left hand reaches the deck to apparently "square up" the deck, not only is it already square, but your fingers are clearly trying to square up the already squared deck, do you follow? That action was a little weak and not particularly convincing, as was the fact that the left hand then does nothing by sitting at the front of the deck while your right hand looks sus.
Keep it up though, good work.