Should I start another piece of writing?

Well I have a lot of piece's of composição literária that aren't finished like...

The Quest For Nova
Wanted (the segundo book to the Quest For Nova)
Through Her Eyes
Millions of Miles Apart
Dreams Written in Ash
And all my character's back story's (Viva, Artista, Harma, Envy, Misty, Eva's, Eric's, Foster's, and Drakes) ~Which are short~

But I got another Idea...

Twisted

It wound be like another type of Alice in Wonderland but mais dark and evil...


Alice sat on the cama her mother behind her brushing out her long long straight hair.
"Mum?" Said asked in her sweet little English accent.
"Yes dear?" Her mother said
"What would your imaginary world be like?" She asked
"My imaginary world?"
"Yes that place in your head where you can be who ever you want to be!" Said Alice happily.
"Well what's your's like Alice?
"It's filled with nonsense and fun! Nothing is what's it's so posted to be and everything is what it isn't!" Said giggled.
"Well that's crazy don't you think!?" They both laughed with one another everything seemed fine until everything became not fine...
The gun shot still whispered in Alice's ears and all she could see now were lights and strange as cores and blood as red as the ruby's that were on Alice's mother's escrivaninha, mesa in her room. Everything became what it wasn't and at the same time what it was....

So what do you think?