How do i get into ut austin?

im going to be a sophmore this fall, my coaches all say i have the potential to atleast be a walk on if not get a scholorship there in football. im average in school (i go to a top 50 private school in the us) and im in the top 40 percent of my class, my gpa last year was a 2.7. im also pretty lazy but id be willing to do almost anything to get into a good college. any ideas?