Question 1: Does a successful article need to be long?
Sometime, people can just easily downvote your work for being short.
Question 1.1: If so, how can you write a long good article?
(e.g. How do you come up with long good article)
Question 2: How to write a humanoid SCP without making it "anime-ish"?
Yes, people can take it hard on that. I am very interested in Japanese mythology (Youkai for example), but I am aware that it might be too "anime-ish". I once almost tried to make "anime-ish" Japanese mythological anomalies, but I had changed my mind not do do.
Question 3: How to set up a good back-story of an anomalies?
In my opinion, writing stories is the hardest part. (And I think new writers might agree as well, maybe professional too?) You do realize that danger is just a cheap thrill, right? Nowadays, an article is litterally a story.
Enough of questions here.