[@Silver] Nope, you will not. If it's in the PM box it is accepted, and as long as it doesn't break any guild rules it will be featured in the thread. (I'm not going to check the account until the day that entries are due, lest the system inadvertently mark everything as read.)

Also: If you decide there's something wrong with your story, you can edit that PM as many times as you would like between now and the day entries are posted.