Do you have a story to tell? Writing a blog post could be the most amazing experience for some people, your story could change lives. Just think what are you in the mood for, a story, tutorial, do it yourself; whatever it is...do it your way.
Don't know how to write your blog? No worries, write your blog as if you were telling it to someone. Free yourself in your writing, tell the world what they want to know and you will see how interesting it will get.
Write your blog in your own style. Readers appreciate who you are and the way you write, remember the more you write the better you become...so write your blog.