I gotta be honest, I couldn't listen to the song all the way through because it was pretty much the same movement over and over again. The pianos you use were literally always on the same note, and then there's that one sequence that repeats ad nauseum which, while it does lend towards variety and breaks up the monotonous dual piano, doesn't do a whole lot past that.

Now, don't be discouraged. It wasn't too long ago that I was a beginner with FL Studio in a similar position as what you find yourself in. What I would recommend, rather than making original stuff right, is to do some easy covers/remixes/whatever you wanna call them, and get your sea legs, so to speak. If you tell me what it is you're looking to do using FL Studio, I can help you in how to do it. I have been using the DAW for six years, after all, so there are benefits to experience, even if it's only self-taught.