EY values willingness to work hard, ability to be flexible and have a strong tendency to multitask along with a good dose of both "school book learning" and brainpower to learn new things. Many opt out, so that is why persistence is one of the desired objectives. Keep in mind that the skills you learn at the intern level will always be needed, and you will constantly be adding to that toolbox of skills as you advance in the ranks. It can be frustrating because EY and the other Big 4 firms want to promote the best and the brightest and many opt out. The job is demanding and will always be challenging at every level. And if you are sharp, strong and persistent, it might be the right career for you.
Ensure that the quality of your work exceeds the expectations of the team. If you are able to go one step further, the team will see that you're someone who is willing to make an effort, and this is what will separate you from other candidates who are applying for the same role. Ask more questions to show that you are interested in your work. Try to maintain a close relationship with your team. Good relationships build better teams, and any team will prefer to retain you instead of replacing you if they can see that you are able to adapt to the team dynamics.
From my experience, getting offered an internship is the hard part. If you are offered an internship, you are doing something right,-- and they know this and will want to keep you assuming your performance remains. My advice to receive a full-time offer is to work hard in school. Keep your grades as high as you can. DEFINITELY, ABSOLUTELY, 100 PERCENT apply for the "Emerging Leaders Program" (generally offered the summer before your last two years of education). This will give you a leg up in be selected for an internship. Ask the accounting faculty more about how to apply. There are interviews and GPA requirements to be selected. It never hurts to continually practice your mock interviews.
Work hard. They don't expect you to be good, and they don't expect you to do things right. They expect you to be good to work with (polite, conversational, courteous) and they expect you to work hard. If you do those two things, you will get a full time offer. (the few stories that I've heard of people not getting offers have to do with drinking alcoholic beverages when they shouldn't, losing the company computer, and being rude to superiors).
You should always try to do the best. If you intern during the busy season, there will be a lot throwing at you. Ask other people for help! Professionalism must be expressed all the time as you are representing the firm. You should try to utilize EY’s resources, for example, EY has various internal websites where you could look for work-related subjects. You also will have a Peer Advisor, a Counselor, and a People Consultant to assist you with your questions. Lastly, as you go through your internship, you should actively ask for feedback from the people you work with to see where your weakness is and how could you improve it.