Engage readers with well-researched and creative blog posts. At the end of it ask questions or feedback from them.
Blogging is as much about bold ideas as it is about creative expressions, Work on your language and dive into ideas fearlessly.
Use technology - Social plugins and SEO tools are a great thing to market your blog or a blog post. If you do not know about it, then learn it. It helps you reach out your audience in a better way and also improves the ranking of your blog.