When Making a shop you will want to make things nice.
In a Graphics Shop, you are providing a Non-Profit service for making signatures or Avatars.
All Owners should have a Set of rules, And maybe a little thing that tells that people read the rules truly.
Remember, Do not rush, We know you have a life too, and We understand.
No Trolling or spamming of any kind just because you don't like the art you got or you have to wait. If you don't like it, the person that owns the shop will probably most likely tweak it to your likings.
Banners and Examples aren't needed but are encouraged to have when making a shop. If there is ever a Graphics Plaza you might need one then. And As for the examples, Examples show people what you can do and what you can't do. You might want to say or show no animations if you don't do animations so someone doesn't ask for one, for example.
Have a Nice day, and Have a nice Shop!