When I first started I was a stickler for breeding "Standard to Standard" birds, but the fact of the matter is that there are no Perfect birds whatsoever... Some may come close, but you'll never have a "perfect" bird.
And even two near perfect birds, are not guaranteed to give you "perfect" offspring. And if I may be so bold, I'd bet that 9 times out of 10, two "near perfect" birds probably create more poor quality chicks than they do anything.
Breeding is like a game of chess. You have to think ahead in order to make the right moves. If you evaluate each bird and pair them properly, you'd be amazed at what two lesser quality birds can produce.
She may not have the proper undercolor, or sheen, but paired with the right male, all the offspring may inherit the right undercolor, and produce your next show champion.