So you have had actual interviews. That is promising.
You now have a whole year to improve yourself and become a stand out applicant for next year.
I would strongly suggest you spend a year working in a veterinary practice (ask to work as a vet tech trainee for free even) and/or work on a livestock farm where you can learn a great deal in a short time (lambing/calving season, having done a few dozen of these before you even begin vet school will be useful) and work on your interview technique and people skills.
Getting your ear into the farming network is no bad thing either, as you can ask around for people who might likely take you as a student placement in the later years of the course...