Thanks for posting the link to these, of which I listened to as many as I had time for tonight. I liked the Debussy style best because it is obvious you enjoy it more than the others and therefore it turned out best, with a number of beautiful cells. I think the comment of Mr Roberts in the master class video is also very pertinent to your improvisation. Take many more risks. Watch Cecil Taylor or Keith Jarrett. The whole thing is critically balanced, a hair's breadth from ecstasy on one side and and disaster on the other. Safety and calculation are boring. Improvisation which really transports us is full of serendipity and flying off on tangents. Overall very promising though. I look forward to more as your own piano personality develops. By the above examples, of course, I don't mean you ought to embrace the actual musical material of players like Taylor and Jarrett, just its means of production.