Looks like you're still growing, and quite a bit too.
Meaning, your motion will change as you fill in and gain the extra 20 lbs.
Right now, stop between serves to conserve energy and load. Don't continously flow from one serve to another. In match play, you get disturbed between first and second serves.
You feet stance is well closed, but you twist your torso to face the opponent. Instead, force your toss out to the right, turning your shoulders away from the target, to allow a more lined up neutral stance. This will help later with quicker recovery, and less need for athletics to recover for the return.
Obviously, nice swing.