Blogger's Blog Layout Dashboard
In the Blogger Template Designer, click on Layout, and it will take you to the Layout dashboard. Firstly, choose the Body layout of your blog. You can choose to have a blog layout of one, two or three columns. You can also choose the numbers of sidebars that you want, as well as where you want them to be positioned. This flexibility is great as it gives users greater maneuverability, especially for those who want to optimize their earnings from their blog. Layout of the blog plays a great part in optimizing the monetization of the blog.
Next, select the Footer layout. You can choose to have one, two or three gadgets in the footer of your blog. These are the places where Google gadgets can be added to your blog.
If you would like to change the width of your blog, all you have to do is click on Adjust width and then move the arrow to the right or left of the bar to adjust the width of your blog according to your preferences. You can preview your blog right below the control panel. If you would like reset it back to the original template width, click on Reset widths to template default.
Once you are done, click on Apply to Blog, the orange button on the top right corner of your control panel.