Please, please fix "I am a good writer, the content that I create is quiet good (I think)". That's the first line of your paragraph about gramatical oversights, and you say "quiet" instead of "quite". Also, the "(i think)" makes me feel like you're not a professional.
ALSO, I'm sure you can hire someone on craigslist to give your work a second read for gramatical mistakes, if that's really a blind spot you care about.
But I worry, are you even trying to get better? It sounds like you've accepted your current skill level as a fixed balance that can't improve, when that's probably not the case.
That's an interesting article, thanks. And I'd like to say that I did enjoy your first article too, and that I was willing to overlook the tiny details... until I came here and saw that writing (and more than writing - grammar editing) was your core competency.
But I'm curious then: do you currently do the grammar editing yourself (in your "Fixer" package)?