I guess I came to the game late, comparatively. I was 16 when I started my first serious novel, which was intended to be 'an eye opening space opera whose awesomeness would revolutionize the literary world'. Not that it wasn't absolutely terrible -- it was! I think the onset of age only meant that I could get more creative with ways to make it as horrible as I could, as I employed and then proceeded to blatantly misuse a wide variety of literary devices culled from my English classes.
I think I unintentionally committed every single crime possible, including starting with an character waking up, and then proceeding to stare at himself in the mirror as an excuse for unnecessary introspective philosophical exposition about how angsty his life was, and how no one seemed to understand that he was not an android like everyone else. I also got way over-creative with punctuation and font, and seemed to think that mashing my fingers on the keyboard to spew out symbol junk was a good way to convey emotion, as was changing the font and font size every few sentences. Oh, and let's not forget that I somehow also managed to justify to myself that ending and starting chapters in the middle of a sentence, as well as having chapters only a sentence long, was somehow a mark of good writing.
My best excuse was -- "but [insert famous writer's name here] did it!"