I noticed the following:
(1) Too much head movement and posture change. It starts with your rocker step to the side - your head moves to the 1B side. Then it moves back toward 3B. As your front knee drops after knee lift and your back leg breaks, your head and torso appear to lean sideways (toward 2B). At foot strike, you lean back toward 1B. As the shoulders come around, the backward lean becomes a sideways lean (still toward 1B).
Solution: Minimize the rocker step to the side and find a posture that allows your core strength to stablize your head through your delivery.
(2) During your stride, you appear to reach with the front foot instead of leading with the front hip. This most likely contributes to - if not causes - the above posture change toward 2B.
Solution: Start the hips forward sooner and faster.
(3) You appear to stride to the closed side (kind of hard to tell in the video). This likely contributes to the late posture change toward 1B - you bend to the left (toward 1B) at the waist as the shoulders come around and attempt to get back online with the target.
Solution: Wait and see what getting the hips going does. If this is still an issue, try starting on the left side of the rubber.
(4) Hip and shoulder separation looks good.
(5) Front side stability is non-existent. You drop your glove, open up the front shoulder early and are over-rotated at release. This causes you to throw more with just the arm which puts more stress on the arm. It also costs you some velocity and control.
Solution: Again, wait and see what getting the hips going does. These issues might take care of themselves. If not, learn to swivel glove over so palm faces your chest and bring the chest to the glove.
(6) After release, you fall off to the side and finish with your glove way behind you in a position that makes it all but impossible to use it to protect yourself against a liner hit back at you. Teams will bunt to your throwing arm side - especially with a runner on 2B.
Solution: This should fix itself by fixing the other things.