I dont think anyone knows tbh, its been asked a few times before and the general opinion is that nobody knows what they are looking for because everyone has a different experience. I mean when I first started seriously looking into Emirates I read every single post in this thread (it took a good week haha!) and some people were saying "the best advice is not to be too loud because the overbearing, obnoxious ones who talk too much never get through", the next person says "OMG I cant believe I didnt get through when a girl in my group who wouldnt let anyone get a word in edgeways made it!!". Its a bit of a mystery. A lot of it must just be down to pure luck and charisma.