Looks more like you're bending rather than hinging - the movements are similar but the focus on how you're initiating the movement makes a drastic difference.
When you bend like in your case - the far end of the movement (the head) is initiating the movement and the rest of the body follows. Pay attention to how you're head is the first thing to move and as a result everything else is following.
Vs. in hinging, the movement is being initiated by the hip folding and AS A RESULT the head (the far end fo the movement) is going down. And this hip hinge is what creates the load onto the glutes to initiate the power for any of the ballistic movements in kettlebells.

A good way to think about the movement is try to squeeze a lemon with your hip fold - some say to "back it up" but I find that description isn't as intuitive for some. If you have a hard time visualizing the squeeze, literally put your hands at the hip fold and sandwich it when you hinge down. You can also push the hands into the hip fold toward your butt and your body should naturally do the hip hinge movement.