could we see more comments on what this guy is getting right? I know he is asking for help, but Imo helping to lock in some of his many good points is very helpful in the process. He seems to actually overdo some of the good things to an extent. Great racket drop, leading up with the elbow, launch up, shoulder turn. I saw a lot of the right pieces in place and think he should focus on timing and putting it all together more fluently.
I'd start with improving the toss location and a focus on keeping the tossing arm up longer.