My fan fictions usually consist of my obsession at that given point in time, me and my friends.
I have no shame in saying that I put myself in almost every fan fiction that I write. I find that it helps me understand some of the other characters better, and allows me to get to know my writing style and often times new things about myself in a non-professional writing atmosphere.
These fan fictions are just fun stories that pop into my head and I just have to write down.
Criticism is appreciated, however, only positive and constructive criticism will be acknowledge, not hate and negativity. Those such messages will be deleted without fully reading.