I know it's probably too subtle for the eyes of a beginner, but any more advanced student will point out things like how diffeerntly the knifehand strikes are done in your two videos. In the one done by the man you claim is your mythical daddy, the fingers are spread. I this one, they are together.
I don't really expect you to understand why that is a significant difference.
I don't really expect you to understand why that is a significant difference.