I would not waste your time on breeders from the AKC website. You will most likely end up with a pet quality Yorkie.
If you are serious about finding a show prospect, you need to contact breeders on the YTCA website's Breeder Contact page.
Yorkshire Terrier Club of America
Be warned, though, reputable show breeders will not just turn a show potential over to a novice. Many require a co-ownership. If you are serious about getting into showing, your best bet would be to attend some shows in your area, meet some of the breeders and see if you can find someone to mentor you.
You can find the show schedule for your area here:
InfoDog AKC Dog Show Information - Main Menu