It's fine, it's serviceable, and it would get the job done. If you're looking for perfection, however, there are a couple of points that could be improved. There is visible tension in your hands, especially your right hand. Also, the left thumb lying on the top of the deck is a dead giveaway that some kind of move is about to happen. And maybe try and minimise the riffling action. A gentle riffle can suggest that the cards are being held loosely, implying they are out of your control, but too much of a riffle draws attention to the moment of the move. My recommendation would be to practise by alternating executing the pass with not executing it. So, insert a card, and pass it to the bottom, then insert a card and leave it in the middle, and so on. If you do this repetitively, paying attention to the differences in your hand positions, states of tension and relaxation, then your pass will begin to look more relaxed and closer to the genuine action you're trying to mimic. Of course, be careful you don't cheat yourself by making your genuine insertion look more like the pass instead!
Thanks for your time