2 things. You move very slowly at the beginning, pausing at the dreaded "balance point". Get moving toward the plate with your front hip just as or even before your lift leg gets to the top. Get moving.
Second thing is you're landing to the throwing arm side of your target line, or "closed". If your mental thoughts are on driving the hip sideways at the target, longer and harder, you just might fix that problem. Right now, there's a lack of sideways momentum directed right at the target.
Now, having said all of that, many things change when you get on a mound, in a game and throw at game intensity. So, I can't be sure these things will still remain as problems or even if my suggested fixes will still be valid when you get in a game situation.