Sparkatale

I had this idea in my head for a while now and it's really getting me agitated. I've been reading some old fairy tales by the Grimm Brothers and just watched the Brother's Grimm with my niece and i told her my idea. She thinks it's quite good but i need an audience. It will be a Fanfiction as i am putting together most of the Grimm Brothers tales into one with Jacob Grimm as one of the main character and also a young woman called Cindy alongside William Grimm. I have based them in this world, in the past. I am making it a Horror as I took a couple of lines from the begging of the book and my niece really liked it. She usually gets scared whenever i tell her a Horror, one of my own and can't sleep after it. But tell me what you think please, I don't know whether to go along with it or not.