getting someone to take photos of you stacking her on the table and on the floor is a good way for you to see how she compares to the ideal picture of how she should look to make the most of her finest attributes to demonstrate what it says in the breed standard..
Sooooo, if the breed standard says,
"well balanced; compact; measuring approximately same from withers to ground as from withers to root of tail" are you stacking her in a way that makes her look closest too that. Few of us have the perfect shaped dog when we start out, so we need to fool the judge (where possible) into thinking that our dog is perfect. This can be helped by stretching out a little more, or visa versa if too long, position of the lead on the neck to emphasis shoulders etc etc.
Likewise, grooming can make more of the good points and if like us, you have a limited amount of coat, forget the rule about wearing something to make the dog stand out and wear a similar colour so that it fills the gap. With a black dog stacked on the floor with a good topline but not much skirt, wear a lighter colour on your body but dark trousers so when you kneel behind the dog, there is a general dark area that doesn't make the lack of skirt stick out like a sore thumb
hope that makes sense - now I know the theory, just need to put in practise