Hi bkpierce,
Welcome to this forum!
I am pleased to know that you are also fostering dogs/pups
It is such rewarding experience when you find forever homes for those dogs that will otherwise get euthanized. I usually train my foster dogs basic commands before they get adopted. The new owners are very impressed that the dogs can "Sit", "Down", "Stay" and "Leave it" and it inspires them to keep training their new dogs.
And your Phoxy is gorgeous! I think she is more like a Border Collie/Australian Shepherd mix, rather than Shelty.
It is hard to train multiple dogs at one time, unless they all have mastered the commands. It always works best to train one on one. Now that my dogs can "Wait" while I make one dog do tricks, I always praise and treat them for waiting for their turns. Actually, it is a good exercise for them to "Wait" and control their desire to join in.
Show us your other dogs' pictures too.
Here is my 3 dogs, Holly (8 yrs old), Noah (6 yrs old) and Daisy (4 yrs old). They are all rescued dogs and they are such wonderful companions