It sounds like what you are looking for is what some people refer to the baby face yorkie...
Here is a thread on here about the baby doll faces...
http://www.yorkietalk.com/forums/gen...hats-mean.html
It generally means a shorter nose and wider set eyes. As you can see from the thread, it's sort of a hot word, like the word "teacup," but it's just a word used to describe the type of face.
I have one yorkie with more of a foxy face...I think of him as more of the older, traditional style yorkie, and I have one with more of a newer age baby face. He's also fined boned. IMO, he looks like a puppy that never grew up and I find his look absolutely adorable. His muzzle isn't short enough for his tongue to hang out and he's not super tiny either so he's not an extreme baby doll(as some of the breeders like to use as a catch phrase)...he's just got more of a square shorter muzzle and head with eyes that are more pronounced than my other pup.
I adopted both as adults so I have no idea what either looked like as puppies to know the difference..but I've often wondered if you can tell the difference between the two types of face as puppies as well.