You and I share the same central motive for writing, getting better at it by practicing, so good luck to you. As the old chestnut goes, "Dying is easy. Comedy is hard." Unless you're Art Buchwald, I guess. He updated it to say, "Dying is easy. Parking is hard." Then again there's "Brevity is the soul of wit." Write your posts, then edit out 50%. You'll emerge a guaranteed half-wit.
I enjoyed your post and your position, even if I disagree about Sean Bean's suckacity.
The best way I know of to become a better writer is to read a great deal, to learn by exposure to great writing of many kinds. Sometimes books about the writing process will resonate with you. My favorite is Stephen King's, but there are many others by authors and teachers. Classes help to some degree. The rest is practice. You learn by doing it, both well and badly.