Welcome to the forums!
The first thing I would ask is: where's the magic? At the moment all it is is a demonstration of card control; to make it into a magic effect you would show the card going into the middle of the deck only for it to reappear on top.
Secondly - and this isn't really a criticism because you're new to magic - the card handling needs work; once that improves, the impact of the effect will improve somewhat too because you will be able to make the loosing of the card in the deck so natural and effortless. As it stands you are handling the cards in such a specific and deliberate way we (the viewer) conclude that you are doing something specific and deliberate. Again this will change as you become more experienced with handling a pack of cards.
Once it does you could present it, for example, as a superstitious performer trying desperately to get rid of the Ace of Spades - but no matter how much he shuffles it keeps finding its way back to the top. To progress the effect you would then make the appearances more and more magical: perhaps a DL to allow the card to magically appear back on top, then some visual appearances (colour changes) etc. etc.
If you don't already have it, I recommend The Royal Road To Card Magic.