To add an image from Flickr to one or your blog posts using the Quickblogging toolbar, open your blog in the browser and then click the "Add Image" button with the Flickr logo. A notification will appear, asking you to click on the title of the blog post you want to add the image to:

Click on the title, and ScribeFire will open a window in which you can search Flickr for the picture you want:

Select a picture and enter a caption (if you wish):

Click OK and ScribeFire will show you a preview of how the post will look. Use the buttons that the top of the new window to change the size, alignment, and position of the picture. (It is attached to the end of the post by default.)

After closing that window, ScribeFire will edit your post and refresh the page, resulting in the changes being applied to your blog: