I recently posted some artwork by Niki_Art_Solar and they recently got deleted, what was the issue with the images?

they're photos of hand-drawn artwork, and much like with reals, don't meet the site standard
i.e:
- above 400x400

- non-photography/photographed:
(same applies with cropped porn)

- no/minimal artifacting [same for upscaling like with waifu2x]:
(the little pixelation around the edges of lines in the artwork)

if you notice any, please feel free to flag them for deletion