Blogger now has Template Designer feature where you can use a template provided by Blogger and customize it by yourself. Right now, they only have minimum number of templates, but i believe it's just a matter of time before they add more and more templates to the system.
Unfortunately, it's only available only in Blogger in Draft, a place where new features for the next Blogger will be tested by testers around the world. If you want to test it, logged in to Blogger in Draft and you will see it on the Layout menu. You will see a new link called Template Designer and from there, you can start modifying your layout.
Have fun with Template Designer
Check the YouTube video below: