Derpbooru Free Edition!?
Artist is StDeadRa1 on twitter but uses StDeadRa here on derpi and that’s the more used version of their artist tag.
Artist is aferalsunflower on twitter but euphoriapony is the more used tag by far. Proof these are the same person can be seen on their Tumblr page if you click the twitter link it sends you to that twitter account.
DP — Done.