At the stage were I can play my repertoire, but how do I make it sound interesting, and well crafted in general?
I've learned some limited repertoire myself, and unfortunately after I learned it I realized that I'll never be able to polish it. I just don't physically have the ability to play it the way I want it to sound. It's not a matter of more practice or anything like that. My fingers just won't do what my mind wants them to do. I've come to a dead end unfortunately. I'll just never be able to play the piano. My fingers just won't do it.
ask me how I know!
Leucippus and Liztisforkids - find yourselves a good teacher!