1) Official posters released by the Network
2.1) Poster with no text
Must be comprised of official resources AND show signs to that specific series
2.2) Product/Box Art
Official product artwork such as DVD or Blu-ray covers
2.3) Production Art
Additional official artwork such as original storyboards or concept art.
2.4) Fanmade posters
Acceptable: A fanmade poster that combines the official promotional image with the official font (or at least similar)
Note that if a fanmade poster comprises of random source images & fonts. It will be rejected/deleted.
3) Book cover that the series is based on.