It's always important to backup your Blogger Template. Especially if you edit it often like I do. This tutorial will show you how to backup and restore your template.
1. In your dashboard, go to the template page
2. In the top right you will see Backup/Restore
3. Click Backup/Restore and you will see this window open
4. Click Download full template and save it to your computer
To Restore your template, follow steps 1-3 and then click Choose File
Then locate your previously saved template file and click open
Now you click Upload and when it's complete you Close.