practice, practice, practice
You shouldn't post a video on YouTube of yourself playing a piece in the comfort of your home unless you have practiced the piece so much that it subconsciously flows through you, completely free of error. I am biased because this is my favourite piece of music, but I think this applies to anyone who wants credit from a YouTube posting.
im with tanman, I love this song, and you have at least a decent command of the instrument, but you gotta make it flow out of you. Also tune the low E. practice practice practice!