Looking good so far.
He's got some coordination to work out, but that's not at all uncommon. This is all new.
The only things I'd work on at this point:
1) keeping his glove side strong and not get the floppy/saggy thing going on.
He points his elbow at the target, which is fine and he starts with the glove in relatively good shape, but when he's bringing the throwing arm around, he sort of looses control of the glove side. He should keep it still...keep it up and bring his chest to the glove in the direction of home plate.
2) keep his throwing arm straight back longer
He's getting to the cocked position (arm up in an L) very early in his stride. This means his arm is ready to go, but he has to wait for his body to catch up. He should not get up into that position until just prior to his stride foot touching down. Currently, he's halfway through the stride and the arm is already up.