It doesn't matter if it is good or not (or if you think it is good); it is considered fan-fiction, meaning you can publish it (there are many sites on the net for that), but may not make money from it. For details google for 'fan-fiction'.
my love for you
Zayn being a terrorist.
Check Wattpad.
Here's a link.
A genre called fan fiction.
There's a couple of good fan-fictions with Johnny Christ on www.mibba.com, but you have to be a member to read them.
If you mean fan fiction, then there is justinbieberfanfiction.com
livejournal.com
Same as any other website, have someone do it for you.
You can find a good fan-fiction movie at metro.co.uk.
fanfiction.com of course or if you want original stories there is fictionpress.com