How To Take Complete Backup of BlogSpot blogs?

One thing which you can do apart from following BlogSpot guideline is taking a periodic backup of your BlogSpot blog. This will ensure that if something goes wrong with your blog in future, you can always restore your data and posts.
Taking backup of BlogSpot blog:
Any BlogSpot blogger can take a complete backup of blogspot posts, comments by using export feature of BlogSpot blog. Backup will be done in the format of .xml format, and you can store it on your local desktop. Unfortunately, this is more of a manual process, and depending upon how often you update your blog, you should take backup weekly or monthly.

A good idea is to take a backup of your customized blogSpot template at regular interval. This will solve two major problem:
I also recommend you to keep the backup files either on Google drive or on Dropbox, so you can access it from anywhere. Do let me know what method you are using to take backup of your Blog?