More life advice here ^^^
Three of us are telling you the same thing. Must mean we're on to something
Don't hesitate to ask more questions of course, but it's pretty much guaranteed that if you want to get into a school based on the images you show them. You had better put a lot of time into selecting the images, and the order in which you present them as much as how you present them. They are going to teach your presentation at school amongst the many things you will learn. But they want you to demonstrate that you know how to think and express yourself with images.