For the journal entry for yourself, make it personal, like a diary. It's said that its a good mental purge and helps clear the "deadwood" from the mind, leaving it clearer and more open.
After you've written the personal journal entry (send it if you want to the group but its not necessary), write a journal entry, or a story for that matter in journal form, from one of the Harry Potter characters. Let inspiration strike you and do not feel pressured to use your favorite character. Use whatever subject matter you would like.
In fact, I'm asking for any entry, no matter the content, and that includes slash or other adult situations. This exercise is going to be no-holds barred. HOWEVER, if you do slash or other adult content or extremely violent content, please make note of this in the subject line (slash) or (violent) as warning and also in the disclaimer headers. If you are under legal age to be reading such material, please, act responsibly and don't get us in trouble, okay?
The character journal entry please do send in. The purpose is to see if after the personal journal your mind clears your mind and allows more creativity. If this happens, let us know!!! Open discussion on this.