Just do it as Nike would say. My writing varies from the awful (You may well have noticed) to the sublime in my not so very humble opinion (You may well not have noticed). It is opinionated and the grammar although usually Ok sometimes leaves a little to be desired. However I make sure that I get it out there and as a result there is a lot of content that goes on to this blog and others.
However writing is not the only content that I make. I make newsletters, audios, video, photo galleries and a whole lot more with the idea of getting better at all of them. Writing though is a fundemntal if only because Google finds words, keywords, and those keywords make or break a site. Some say that something exists called latent semantic indexing in Google and some disagree but you can guarantee that if your blog is about football and you write a post about cheese then Google will not give it as much weight in the search rankings as it would do otherwise.
Now your writing might be total pants but if you can include relevant keywords in it then you can be assured that people will find it over time. When they find it though you really want them to like what they are reading, or dislike it intensely. Yes you heard right, the worst thing you can do is leave people cold. Therefore your writing needs to provoke some sort of reaction and the more visceral the better. If one person hates what you write then almost by definition another will love it. Of course you want more people to fall on the loving it side but pick your fights carefully and you will be happy with the results.
To get your writing better start by doing it. Then leave it and come back to it the next day and see whether it can be improved. Start with just ten minutes and write without stopping. At the end of ten minutes you will have a lot of content. However the trick is not to edit at any point. It will probably be rubbish to start off. Why wouldn’t it be? Not everyone can produce classics first draft. In fact the only case I have ever heard of someone doing something first draft and being happy with it was Sylvester Stallone who wrote Rocky in three days using a pencil after watching an Ali fight on TV. (Some would say it isn’t a classic but you get my drift)
Dickens didn’t start off “It was the best of times, it was the worst of times” Garcia Marquez didn’t start off by writing “As Coronel Aureliano Buendia faced up to the firing squad his mind drifted back to the…” again you get my drift. Writing like anything else requires work. If you know enough about what you are writing about you will be able to write and eventually write well. The most important thing is getting the balance right. That balance is between just getting it out there and perfection. As perfection will never happen write it, wait and edit it then publish. Don’t worry about what people think until it is too late.