Its not just good content that matters, presentation of post is very important too. Have attractive pictures, fonts etc to hook the readers.
People come to your blog out of choice and not any compulsion. If you remember this, the rest is not important enough.
Image speak - A lot of bloggers tend to ignore this, but the images on your blog speak a lot for what you write. Use good quality images and make sure they express your written stuff in utmost simplicity yet precision.