Box of Tricks

Pick the newbie.I have about 5 stories started and abandoned as ideas changed. My biggest dilemma was trying to find an original storyline. Being an avid Pros reader it wasn't as easy as I thought as every theme seems to be covered. So putting head down and with fingers flying over the keyboard mainly hitting wrong keys ( knew i should've taken typing at school). I'm hoping I've found a storyline that doesn't plagarise anyone's work. The story is now completed as I have a lot of commitments later this year so time wasn't going to be on my side if I dillydallied.
My question is, is it ok to send the whole story on Ist July and how do I send it. Im not familiar with LJ.