Dennis, there is a difference between learning the form from a book and reading the classics.
The reason I say your teacher learned from a book is that the transitions between postures are absent or totally incorrect. I understand that there is an element to "correctness", based on style, etc, which is why i told you repeatedly to READ THE CLASSICS!
I realize that that, however, is also a waste of time, as the classics require that, first, you are learning a correct form (double weighting errors dont exist, etc). The classics were written by masters to help an intermediate POSSIBLY get to the advanced stages. They refer to specific happenings that the masters put to words. The LONG way to do it, is to work with a correct form and, through blood, sweat and tears, the form will start to show you (yes, it does happen, and has happened to me and the senior students that i have talked with). What I mean is, when the energy flows are correct because the movements are in the correct places, the "flow" moves your body into the correct path for you. The classics are guideposts to help the intermediate student to get the body right.
What I was telling you is, while the movement you do doesnt hold to the style I was taught (the physical sequence, etc), also, none of the classics are held up either. That means that, while you may have learned a form that was, at one time, tai chi, what you are doing now has no internal nor external connection to it. It isnt my judgement. IT is looking at the classics to see what you dont have.
Places to start:
1) yin and yang in every posture
2) double weighting after Preparation (actually, from the rising poing, but that is too much at this point) is a serious error
3) the feet in your stances point haphazardly (not technically a taiji classic, but part of the foundations of martial arts)
4) you break balanced pairs at almost every chance, which means that there is no internal balance, thus no balance at all
5) adding your own interpretations means that you were never shown WHY the postures were designed the way they were. This means you need adequate instruction in the applications (the traditional ones) for the postures. Understand, these applications are NOT fighting techniques (though they may look like them). They are there to instruct in the CORRECT way to move the body to get the energy to flow correctly.
6) the kwa is very important, and your structure (vertically) is incorrect. In my video, i have a slight lean, which i got chewed out for. Your video shows a slight BACKWARDS lean at times, which is what a beginner does to correct certain things (mainly a feeling of falling forward).
7) by following the China government, and YINNING your lead foot at every step, you are not learning anything about taiji. It is my belief, that that movement was created by the chinese government in the 40's, when the peking 24 was developed, to make people think they were following the classics of being YIn before Yang, but it has caused people to totally misunderstand the idea, and it doesnt work the body at all, like stepping with a weighted front leg (like Fu Zhon Wen wrote about) does.
when you "kick", the standing leg must be DEAD STRAIGHT! It is common to see that leg with a bend in it because it makes things easy. But, since your motivation is health, doing it half way is akin to not doing it at all.
It is funny that you mentioned Needle at Sea Bottom. While I have not seen the documents (nor have many that i know), in 1995, Erle aquired a copy of what he believes, was the original Chang San Feng treatise. In that document, it says that you must keep the torso PLUMB! It says it dozens of times. Erle took a look at the form he was doing and noticed that there were spots where the torso leaned. By taking that classic, he found that the health value of the form increased greatly (this is in his DVD's somewhere). That is modifying WITH understanding, and it wasnt taking someone else' needle at sea bottom! That posture involved a great lean forward, but by doing it with a vertical back, we find the health value greatly increase.
mate, there are so many little tweaks that need to be done, the list can go on and on. I find it funny that your teacher didnt show you (because he had no clue) how to make the form you learned into a MORE healthful form. The funny thing is, doing it for more health, by necessity, also makes it much more martial! That is the great thing about the Yang style. Not the Yang that 99% do. But there are a few who are starting to see it.
I say, with all honesty, that you should start at the beginning, from scratch, with a good instructor or, at least a complete DVD (Erle's Chenfu is FREE on YouTube - his basic form with many advancements). BY doing this, you will be learning a solid form, that, with the work you have done, will start to move you correctly. It will teach you. You seem to think that I ONLY know about Erle, but that is not true! I only refer to Erle here because some people here like to discuss/argue points, and he caused that in people! By using his name, I get to see where people are and who understands things. Many people misunderstand what he taught! MANY MANY PEOPLE! But it is funny that, those who took the time to actually see what he was doing dont.
Good luck mate. Your passion for taiji is admirable. I only hope that one day, you listen to what I was trying to say here and actually start on a path that can have a chance to give back to you.