Forget a pretty website. Forget domains, GoDaddy, Yahoo, Google, Blogger, WordPress... Forget followers, comments, and anything else.
You are NOT going to have a good blog if you don't know what to write about. And so many times I see many people just using their blog as their diary, as I said yesterday. Unless you're a celebrity, not many people want to read about your daily lives. And general blogs are just so annoying, too! You have to have some sort of common theme to your blog, otherwise there is no point in following you. Don't even get me started on those blogs that just post something they find on the internet and do nothing else.... Now, there ARE a few exceptions to this rule, but you have to already be a very good writer to pull this off.
But you don't have to be a very good writer to have an interesting blog. It helps, but if your subject is interesting, you'll get readers that way too. And the great thing about writing is that the more you do it-- the better you get! So don't worry, it'll come along.