>>82606748right haven't even considered that part.
Especially if you created enough links between the art account you want to leave behind and the rest of your online self. Then the best way to memory hole it, is just nuking the thing.
I was lucky, I could just leave the account up and forget about it (except for very few occasions where I remember) because the only connection between it and any other account I use are the memories of a select few friends that I shared some of the art with.