Short answer: I didn't. I've always wanted to get involved with one of the big names in the industry, and dreamed for a long time that I might some day see my name on a product package, inside the cover of Dungeon magazine (I still mourn the death of the printed version) or on the cover of a rulebook. I came close though...
Years ago, before I discovered Heroclix, back when I just graduated college with my creative writing degree hot in hand, I looked to the west, seeking employment in the city of Seattle with the Wizards of the Coast. I had little to no actual paid writing experience, but I was determined to not let it stop me from applying for a position that had recently opened with the Magic the Gathering team, a job responsible for churning out the colorful "flavor text" for expansion sets, among other things.
Part of the application process demanded a one page exercise of my creative writing abilities. Instead of submitting a piece of short fiction, I decided to assault them with a mock-up of a tabloid, featuring fictional stories, news, and content from the core M:TG worlds. I wanted to convey to their team that I could write in snippets, top ten lists and blurbs, keeping a simple style that was simultaneously entertaining, and hopefully humorous.
I thought I'd share the end result, which (outside of WotC's HR dept.) no one has ever seen:
I don't recall a lot of feedback on the process, but do remember getting notice that I had advanced to a high level among the finalists, perhaps even in the top 5 considered for the position. Sadly, I think my biggest drawback was the fact that I was located halfway across country and thus unable to easily meet for a face to face interview. At least, I hope that was it.
For all I know the mere mention of the insidious Groinclamp could have scared them off.