Hi Julie!
Aren't puppies fun :-p Nice clear shots. I agree with everything Jim said. Here is a photo of my young male. I would like to have the photo a little more angled to the right but that is the breaks when you have to have a friend snap the shot when you are stacking the dog :-)
For the puppies, if you take them between the legs and gently swing them, when you place them down they generally hold the stack nicely so you can get off a few quick shots. Here is a picture of the above dog at about 5.5 weeks after being swung:
