anybody willing to read my fanfics and leave constructive criticism?

i'm aspiring to be an penulis someday so i start with Penulisan fanfiction. i do write my own original stories, but i don't feel comfortable posting them on the internet just yet. but it'd be much appreciated if any of anda Supernatural tv tunjuk peminat-peminat would read my fanfics & leave your reviews and komen-komen about it!

links-

story 1:
Schizophrenia - "dean anda really are here, right?" "of course I am, why wouldn't I be?"
link: link

story 2:
Destination Unknown - Kaz and Eva Cinta the tv tunjuk Supernatural. And sejak love, they mean mildly obsessed. What happens when these two fangirls are somehow transported into the tv show? At least this universe is made up of hot boys - can't say so about their college, though.
link: link

story 3:
Dear Dean - in which she writes him letters in hopes that he's still there. [ season 10 (may become slightly au since only a few episodes are out ] [ demon!dean ]
link: link

story 4:
Calamitous - "what is depression like?" he asked, frowning. she sighed, "it's-it's like drowning. but anda can see everyone else around anda breathing." [castiel/oc]
link: link

thanks again in advance! :-) i'd really appreciate feedback since i want to improve my Penulisan skills