Some good things going on there. There are a few things that could be better. He is young, so plenty of time to improve. One quick fix...., you can't flatten the bat head like that, as it forces the hands to work out to in (as previously said). Makes it a long swing, and he won't be able to keep his hands inside the ball (likely pull most times). If you are fortunate to have a good hitting instructor in your area, get him in front of that instructor. Good luck.