This is not an executive order, but a suggestion and advice. You may choose whether or not you may heed it.
Derpibooru is not a nice place for Sonic crossovers, especially when it involves Shadow; namely bad for us in ShadowXTwilight
. They can post images made in dA without asking for permission from artists. As a courtesy, they would post the original link within derpibooru.
But my suggestion is this,
"Be sure to write down in your description when submitting your work that 'derpibooru does not have permission to re-post on their site.'"
As they are volatile with their opinions on anything Sonic, it would be best not to feed the trolls in derpibooru. If left unchecked, their trolling comments may encourage others to follow. Say for example, "This artwork featuring Shadow and Twilight is an abomination. You should hate it like we do." To prevent further hate towards the crossover and ships (as we haven't had enough), you may want to typed what I have written in bold
. You may use different synonyms of the wordings and grammar, as long as it gives off the message, "don't post this on derpibooru."
Of course, whether or not you want to write it down in the descriptions, the decision rests solely on you.