Thacow: Good on you for seeking some feedback, it can only help and hopefully give you something to focus on. I'm pretty certain you can only apply twice with a year in between. Good luck for next time.
Steve: Please don't take this the wrong way but, trying to dissuade someone from trying again just because they didn't make it first time is a bit out of order. It sounded a bit like "If I can't do it, you can't do it".
I'm hopeful that this wasn't your intention though