Seljan | SlingToKnow | TTF and Accuracy Tips

The slingshot I am using is the Cleaver V3. A fully CNC machined, aluminum, pro model with clips and sight system.
Once we are passing beginner stage things might stall. We change slingshots and styles and hope for a change, but then it becomes a mess. What to do when over the newb phase and accuracy reaches a plateau? Look for coaching tips. I have collected a bunch of tips and tricks that might help your improvement.
You may recognize that you are already using these, but had no info about the experience of others. Or looking for some explanations. See it for yourself.
If you are interested in self coaching ideas you may check my main resource for this video. KiSik Lee, Tyler Brenner: Total Archery - Inside the Archer.