I have been writing original fiction for several years. I seem to be particularly talented at starting novels and then not finishing them. Despite that, at this point I have four finished novels, several poems, and a few shorter stories.
I entered the world of fan fiction due to a post-HBP speculation I had about Regulus Black, Severus Snape, and the potion in the cave, which led to the one-shot story The Secret Papers of Regulus Black.
That story has inspired a sequel (still in progress) and two prequels, Damage Control and Loyaulte me lie.
As for challenges, I am occasionally inspired. The Prodigal Son is my response to the June 2007 One Shot Challenge, and features Percy seeking to reconcile with his family.
I also participated in the Summer 2006 Gauntlet challenge, with The Labyrinth of Lost Souls. Part of that story involved a riddle, which sparked my other posted one shot, The Logic Problem.
Both The Labyrinth of Lost Souls and The Prodigal Son won second place in their respective challenges.
I'm currently working on a long, self-indulgent work that's based on another fan fiction (and thus, will never be available for public viewing), the sequel to The Secret Papers of Regulus Black, and two Year 7/Post-Hogwarts stories that are very different from each other.
Due to my tendency to abandon works, I have decided not to upload any chapters of a given story until the entire story is complete.
The Papers Series (in chronological order based on plot):
The Secret Papers of Regulus Black - what started it all.
Loyaulte me lie (secretly my favorite) - second prequel (i.e. it happens after the events in Damage Control)
Stories not part of the Papers Series:
Labyrinth of Lost Souls - my second favorite.
The Prodigal Son
The Logic Problem