I came across this video a few years ago but nothing I had found really broke down and walked through the mechanics of disc golf throw from the t-box as well as this video. I watched it and with a little practice at implementing what was in the video I was able to see big a big increase in my distance and accuracy.
Here is a little information about the guys in the video if you're unfamiliar with who they are. You've got two amazing pros in this video giving some great advice.
Dave Feldberg is one of the top 5 ranked disc golf players in the world. Dave’s career highlights include seven time major champion, all time leader with 17 national tour wins, two time player of the year, 3 time PDGA points leader, 3 time national series champion, winner of 11 country titles, and over 100 professional wins.
Ken Climo is a professional disc golfer and some consider him to be the best player to have ever played the game. Climo has claimed Twelve PDGA World Championship titles, including nine in as many years from 1990 to 1998, and 3 Masters World Titles (2012, 2014, & 2015)
The video is about 30 mins long but It is 100% worth the watch if you're wanting to know the little things to do right.