Don't mean to be cruel, but if you are asking this question you are not ready for advanced because you are not intermediate yet.
Read this forum and play. It sounds simple, but it sounds as if you need a lot more time on the tables. People here that have put in many hours (read that as years) of study and play time, and still struggle with heads up play. It's a rare opportunity for the most part unless you seek out that game. The only other time is at the final table--obviously.
Play more sng's--that will get you heads up more often then multi table tournies. Go to one of the heads up cash game for a really low limit--and hope the other guy isn't donking or drunk and really wants to play/learn like yourself.