Can I legally train dogs in virginia without a permit when your 14?

Hi, i have a HUGE dream to be a dog trainer. I've made all my flyers, business cards, signs and my calendar but i don't think i really want to apply for a license. do i really need one to call myself a "dog trainer" is it illegal in virginia. not only do i not want to take the time to get one but i also don't think i am the right age. im ONLY 14. I have always loved animals. i do LOTS of community service every week with the Lost Dog and Cat Rescue Foundation to help rescued animal get adopted. I was inspired by Victoria Stillwell and her show "Its Me or The Dog" as well as by Cesar Millan and his show "Dog Whisperer" i have all the books written by both of these people and have numerous books on dog psychology.Can i call my thing a Business without having a permit? I really don't want to interfere with the LAW! thanks for all your help! ♥