Sometimes, we all reach milestones in our time at Wikipedia. Sometimes you reach 100 featured articles. Sometimes you get elected to ArbCom. Sometimes you hit 600 featured pictures, which, as far as I can tell, is more than anyone else has ever achieved, about 8.2% of all featured pictures, and the result of fifteen years of work.
And sometimes, no one else cares about this fact.[1] So how does one write an article about oneself while not appearing completely vain and self-promotional? Well, one doesn't, but let's do it anyway because it'll be at least a couple years until the next milestone.