Feels bad, but I didn’t get into Dartmouth so I decided to apply to USC. So I have the supplemental questions like dream job and stuff like that. I put down my answer and put down an explanation for each one since there was space left. Am I not supposed to do that. And for the 3 words to describe myself, instead of just putting 3 words like persistent, polite, and patient, I wanted to put a phrase like Best Student Ever (It’s not that I promise.).Is that good?
Sorry about Dartmouth! As for USC, those short answers are to simply give the admissions committee a better understanding of the type of person you are. I think the way you approached them is interesting (in a good way!) and I’m sure the admissions committee will think so too. Either way, they don’t hold a lot of weight compared to the rest of your application, so I certainly wouldn’t worry about them too much. Hope this helps and good luck! 
@agustinaotero thank you for the clarifications!