The most important skill you can have as an intern is to be willing and eager to learn. There are going to be a lot of things you don't know and the company will expect that, but being willing and eager to learn throughout the internship will make the difference. Almost everything you do you'll have to be trained on or taught, so wanting to learn about these things will make you stand out. Communication skills are also another very important thing to have. You'll constantly be in contact with your engagement teams about what projects you're working on for them as well as any other projects, when they need to be done, and any questions you might have. As long as you're communicating well with your teams about how your project is going, you'll be in great shape.