2.5 GPA freshman year in high school. want to get into UC Davis?

well. i had a horrible freshman year and ended up with a 2.5 GPA. i want to get into the vet school at UC Davis and i know that with that kind of GPA it's not happening. in mid August i'm gonna start interning at a private vet hospital probably 5-6 hours a week, because i know it will help my chances of being accepted into Davis. what else can i do besides raising my GPA a ton the next few years to help my chances of being accepted? thanks(: