I’m not sure how it would be implemented, but I think having an epilepsy filter option before submitting artwork Would be helpful for people with drawings that feature bright colours or complex patterns that could trigger people with photosensitive epilepsy
Update: 05/03/21: so for an idea, we could use the block feature

Here’s a visual idea of a filter as an example

Another potential filter warning could say: (thank you glitchedpoison for the suggestion <3)
ooh yes yes! but instead of just bright things + epileptic textures, it could say 'This image could potentially contain triggering content!
click to view anyway'
Dark academia also suggested
dark academia wrote:
Hi, just like to add on! The staff could also have the ability to add filters to drawings in case someone forgets to add it and doesn't fix it/the artist doesn't think it would trigger photosensitive epilepsy or any common triggers like others have said.
I don't have epilepsy but I do have a few triggers I see in Oekaki art sometimes, so this would be a great idea!