Tape yourself from various angles. Video can save you hours of frustration in the ring. Thou shalt make the most of each practice, and each practice attempt. Know what you want to achieve before each session, each throw. Thou shalt practice visualization.
Mental rehearsal is the foundation for physical execution.
You can learn alot more from a 150' thrower than a 200'er. Emulate those who get the most from their ability, not necessarily those with the most ability. When faced with major technique problems, revert back to the basics. Rely on fundamentals and drills to get you through. Don't take 60 throws when you feel yourself tiring after 40.