Hello Ahmad, welcome to the BSS.
Firstly I would like to say that because of the scant information on your Farcebook page one was obliged to draw conclusions. Maybe a more 'open' profile would be beneficial.
That said,
It's utter amazing that you've mastered one of the most difficult parts of steel guitar playing in just three weeks:I refer to the harmonics, utterly amazing ! you didn't miss one, most of us here would hit a 'clunker' maybe one in four or so !!
What a head-start you have in that respect..
It's patently obvious that you need guidance, and on analysing your now deleted video, (You really should repost it) I can remember that you were not only using the positions that Santo used, but were picking in the same way:Your pick position on the word 'Walk" is so much like his as to not be a coincidence. So what went wrong was that you were using the wrong tuning but playing in the approximately right places (The Morecambe & Wise Syndrome)
As a young person one can assume you listen to music, and although you have no formal music training you MUST have been indoctrinated to some extent with the sounds and ethos of popular music. One can presume you have favourites in the musical world which would mean that you're discerning and not 'tone deaf'.
The phrase "Tone Deaf" is oft used but is in fact a fallacy. From before birth, even in the womb we had selective hearing. I stray somewhat, but for a reason, it being that if one tries hard enough one can educate one's ear to be selective. Well at least as selective as the norm.. And that norm being to differentiate betwixt music and cacophony, and tuneful and rhythmic music as opposed to out of time and out of tune music.
So you have started a path that will need guidance, BUT you have an advantage, more so than most here, you have a university education so are capable of learning at a much deeper level than a lot of us.
Where to start ? 1/. You have proven that you can master one of the hardest things on the steel guitar, Harmonics, and you have proven that you have a good memory, also essential to become a proficient player.
2/. You copied the positions from the Santo & Johnny YouTube clip quite closely, so the starting point for you would be to go back to that video and learn it again using the correct tuning.
Here is the tablature for the way they played it. To someone of university graduate level Tablature must be self explanatory, BUT just to prevent any mistakes and avoid possible ambiguities, I will explain.
The horizontal lines represent the strings, the vertical lines represent the bars (Each one 4 beats or crotchets long) the numbers in the lines represent the fret that you play that particular string, the numbers below (1, 2+T) represent the fingers to use and the MUSICAL notation is a guide to the actual timing of each note.
There is a slight mistake and also an omission in the tablature that I'll point out later..



