I train in a field that is close to some schools so there are kids around often and they ask to throw my discs. Hundreds have and some have more than on one occasion. They often proceed to stiff arm, weight back, knees collapsed after a full speed run up, arm straight, low reach back to high release and strong armed throw. They rarely listen to not take run up steps. Trying to tell them to keep the disc at the same height from the ground sinks in easily mentally seemingly, but so few are able to totally rectify the situation. Wrist down? Forgetaboutit. Stiffer knees and pushing harder with the left leg to stay upright or lean forward? Some get the idea and few can contain themselves from running at full speed, because it looks cool, when i do it. It does not help to tell them that it takes most a long time and thousands of throws to learn it. Elbow forward seems difficult to pull off at least, when the disc is close the the right pec.
Kids try to emulate naturally and when they see a more complex form than stand still or slow x step first it is difficult to curb the enthusiasm. After all most have never seen anything thrown nearly as far. So it would be best to first show and then have the kids emulate a stand still throw. Then a one step and then a shuffle step. X step is probably beyond some that haven't got a good coordination. It all depends on the background of the kids. If they have previous throwing experience it's easier to convey advanced ideas and modify their form with instruction. You have to have patience, when they don't do what they are told. Often it is not because of a lack of trying, but a lack of concentration, curbing of enthusiasm and motor skills that prevent them from following instruction. I've never pushed the kids some form or discipline type of stuff, if they haven't shown real interest and capability in changing form first. After all these are just passers by and not in PE class or taking a green card exam.
Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.