Find a potential host for your blog book tour. You can find blog hosts through Technorat or Blogsearch. Choose the one that has the most activity, reader participation and traffic. Make a list of other potential host companies and keep them in reserve.
Create an excerpt to post on your blog. According to PMA, your excerpt must accomplish three things: "To convince the blogger to host your appearance, promote your appearance to the blog's readers, [and] prepare the blog audience to discuss issues and ideas raised in your book".
Provide your background, a book plot summary, blurbs, an author's photo, and a strong book excerpt. Provide a link to your website for the blog host to copy, as many people are leery about opening email attachments.
Pitch to the blog host. Start with hosts who do blogs in your genre. Try to choose someone you think you can work with long-term. If you're rejected, move on to the next name on your list.
Mention your blog at every appearance to create even more of a buzz. This helps build a following for your book.