What are my chances

So, my top choice for college is Marquette University. However, I think I fall slightly below their average admitted freshman. My gpa is a 3.2 and my SAT score is 1110. I took challenging courses and a few AP classes in highschool and got A’s and B’s in in them, and I have a good amount of extracurricular activities. Do I still have a chance at getting in? Is there anything I can add to my application to make me stand out more?

You have decent chances. It looks like a match/reach for you.