well when it comes to people submitting art to us. look for quality, make sure it's not a base unless it's adoptable thing (then it should be in the correct file).
Also if people submit in wrong folder i don't decline because they may of been confused and send a message stating they submitted it the wrong folder and it been moved to the correct file. but also tell next time put it the right folder.
Feature slot only copy the the pic into the featured if you feel that it's top notch quality and should be displayed on the page.
As for favorite it can any artist who is not in the group who has awesome works.
I'm currently trying to put together a big contest thing (if i can ever finish the thing)
But you may start other contests if wanted just talk to me about it and our co person.
basically you can do about anything. but always communicate first if it's major.
If you have any questions about anything else feel free to ask. I'm usually on daily unless otherwise.