im not really sure what to say here
I had a whole bunch of stuff written up and I decided it was no good lol ok so crazyhorse, all im going to say is please don't teach these methods to children. It is bad enough that you are riding your poor horse like that to start with but to bring along a whole new generation of riders using this method is truly horrifying. There is no need for this method really. Do you think the riders of grand prix horses doing classical dressage around the world were taught to do so using this method? No they use their seat and legs to bring the horse off of the forehand. These are the methods we should be following because obviously they work.
You could sit in the correct position and get a better result using your seat, legs and hands. And your horse would thank you for it because it hasnt had to carry all your weight in the worst fashion possible. To sum it up 'your position in those video looks truly awful'. I am sorry but I don't want any young, impressionable kids looking at this video and thinking that this is ok. Its fair enough to see other methods and peoples way but its another thing altogether for them to be doing it especially in the position you say is the correct one