I have been working around forums, blogs and social media for a very long time. I was always very keen on order, formatting, pretty much everything. I pushed this even harder during my studies, working on various projects and in the end, thesis, everything had to be in perfect order. Paragraphs, images, grammar. That helped me to acquire speed and I can decide really fast where to make paragraphs, insert certain images and such.
As for my writing skills...
I have always loved writing. I write my thoughts often, I have been writing short stories (Mostly fiction), I have written many projects during my studies as well, which had to be really good if I wanted to pass certain classes.
If I'm unsure how to continue, I usually take a small break and let the thoughts come on their own. This usually works the best, great thoughts just hit me randomly and I can easily work around them and make something out of it.