It's harder to see the second picture than the first for some reason, but the back foot placement seems a little better. I would get a thinner chain or leather collar for him, and train him to hold his head high so it doesn't look like you have to pull him into position.
There are tricks to getting their feet into place -- not placing the feet themselves, but touching the legs jus up hight, just so. Using bait to bring the head up and the ears and eyes to focus, and I don't know. There are tips. Maybe your GSD club holds some handling classes? Or, it might be helpful to take a conformation class with your dog.
Heidi Ho, Odie
Joy-Joy, Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.