I have been using hacker news comments to improve my writing and I get instant feedback. After awhile I had ideas that were big enough to write blog posts. From my experience in writing poetry is you must keep writing to really get good . Another thing is that about 10% or less of what you write is going to be any good. And 1% is going to be acceptable. Life isn't like college where your performance is judged on each piece of writing. Your job is to maximize that 1% so you just have to keep writing so you have enough exceptional pieces of writing and then you will be a better writer .