What we have to say so far pretty much matches what Halo said: characters and atmosphere are definitely your strong points, and for something in such an early stage of development, it seems pretty well thought out with a nice cast of important characters. The only real weaknesses so far seem to be overall pacing (it jumps around a lot) and your spelling and grammar. Well, grammar mostly, your spelling mostly seems fine (except you sometimes use the wrong word, like "innocents" instead of "innocence"). There were also some tense changes from present-tense to past-tense, so I'd recommend staying in past-tense, as that's the easiest tense to write large stories in.
Those would be the things I would focus on when editing or revision time comes around, though. For now, just work on getting those characters, that atmosphere, and that
story down on the page. Technicalities like grammar and such can be worked out later, the most important part is getting what you
need down first (and that's the story, you know)!
Good luck working on this.