First, find the photo blog you want to edit. Be sure you are in the photo blog application (if you're not sure, click on the blue "PhotoBlog" command in the gray tabs). You can look through the folders one at a time by clicking on the green folder names, or you can click on the "all folders" check box to show the contents of all photo blog folders:

Next, you must edit the photo blog by clicking on the blue Edit command next to the photo blog's name. You will then be in the photo blog editor.