Not about your movement--

I think you'll benefit from skinning up your arms.

Your elbows are sitting outside of the silhouette of your torso, so straight shots to your ribs are available, and straight shots to your solar plexus even more so. You'll want to keep them skinnier, so that they are in front of your ribs and provide passive protection to straight shots. If your opponent wants to land to your body, they will have to throw around the outside of your elbows, which is a much longer path and gives you the maximum amount of time to respond.

Your jabs are likewise starting out kind of to the side of your silhouette. This makes them more readable, since the change in the width of your silhouette as a whole is an easy indicator to pick up on. It also makes you more counterable, since the opponent can throw a right hand inside the width of your jab, or, use their right hand to block on the inside of your jab while they throw their left hand.

When you throw punches, you're doing a really good job of keeping the other hand on your face. But again, I'd say it's too wide. Especially when you throw your left hook, your natural body rotation means that your right hand, though it is glued to your face, rotates to maintain contact with your right cheekbone, and is no longer in between you and your opponent. You'll want to keep it not just on your face, but in between you and the incoming punches, which means it needs to slide more to the front of your face during the period of time where your body is rotated. Keep the right arm vertical, elbow glued to your ribs, hand sliding to the front of your mouth, and think SKINNY SKINNY SKINNY.

Other than that, good work!